Toggle navigation
Navigation
Shop Categories
Abrasives
Coated Abrasives
Abrasive Sheets
Sanding Sponges & Pads
Bonded Abrasives
Grinding Wheels
Cut-Off Wheels
Dressing & Truing Tools
Wire Brushes & Wheels
Wire Cup Brushes
Wire Wheel Brushes
Knotted Wire Brushes
Crimped Wire Brushes
Diamond & Specialty Abrasives
General Purpose Diamond Blades
Concrete & Masonry Diamond Blades
Diamond Cup Wheels
Diamond Core Bits
Adhesives & Sealants
Adhesives
Construction Adhesives
Wood Glues
Thread-Locking Compounds
Contact Cement
Sealants & Caulks
Silicone Sealants
Acrylic / Latex Caulks
Fire-Stop Sealants
Pipe Thread Sealants & Tape
Tapes
Duct Tape
Electrical Tape
Masking Tape
Double-Sided Tape
Pipe Wrap Tape
Hazard Marking Tape
Chemicals, Lubricants & Paints
Penetrating Oils & Lubricants
Pipe Cutting Oils & Threading Compounds
Degreasers & Cleaners
Anti-Seize Compounds
Primers & Sealers
Marking Paints & Spray Paint
Batteries & Chargers
Battery Packs
12V Battery Packs
18V / 20V Max Battery Packs
54V / 60V Max Battery Packs
Multi-Voltage / FlexVolt Packs
Chargers
Standard Chargers
Rapid / Fast Chargers
Vehicle / 12V DC Chargers
Battery Accessories
Battery Adapters & Converters
Cameras & Inspection
Inspection Cameras
Handheld Inspection Cameras
Push-Rod Sewer & Pipe Cameras
Inspection Camera Accessories
Monitor & Recording Units
Locators & Detection
Pipe & Cable Locators
Utility Locators
Sonde / Transmitter Locators
Locator Accessories
Drilling & Machining
Drill Bits – Metal & General Purpose
HSS Drill Bits
Cobalt Drill Bits
Titanium-Coated Drill Bits
Black Oxide Drill Bits
Silver & Deming Bits
Drill Bit Sets
Drill Bits – Masonry & Concrete
SDS-Plus Rotary Hammer Bits
SDS-Max Rotary Hammer Bits
Spline Shank Bits
Masonry Drill Bits (Straight Shank)
Hole Saws & Cutters
Bi-Metal Hole Saws
Carbide Hole Saws
Diamond Hole Saws
Hole Saw Arbors & Mandrels
Hole Saw Kits
Step Drill Bits (Unibit)
Specialty Drill Accessories
Countersink Bits
Spade / Paddle Bits
Auger Bits
Installer / Flex Bits
Screw Extractors
Depth Stops & Collars
Screwdriver & Fastening Bits
Phillips Bits
Torx Bits
Square (Robertson) Bits
Hex / Allen Bits
Impact-Rated Bits
Bit Holders & Extensions
Magnetic Bit Holders
Nut Drivers & Socket Adapters
Machine Cutting Tools
Carbide Burs
Taps & Dies
Annular Cutters
Knockout Punches & Dies
Generators
Portable Generators
Conventional Portable Generators
Generator Accessories
Power Cords & Adapters
Fuel Tanks & Stabilizers
Hardware
Fasteners
Washers (Flat, Lock, Fender)
Anchors (Wedge, Sleeve, Toggle, Drop-In)
Rivets & Rivet Nuts
U-Bolts & Clamps
Nails & Collated Fasteners
Framing Nails (Collated)
Brad Nails (Collated)
Concrete & Masonry Nails
Narrow Crown Staples
Chains, Cables & Rope
Proof Coil Chain
Grade 70 Transport Chain
Wire Rope & Cable
Synthetic Rope
Chain & Cable Fittings
Turnbuckles & Tensioners
Hinges, Latches & Door Hardware
Hinges (Butt, Strap, Piano)
Hasps & Latches
Hydrostatic Test Pumps
Manual Test Pumps
Hand-Operated Test Pumps (Up to 1000 PSI)
Test Pump Accessories
Test Caps & Plugs
Janitorial Supplies
Cleaning Tools & Equipment
Brooms & Dustpans
Mops & Mop Buckets
Scrub Brushes & Pads
Pressure Washers & Accessories
Waste Management
Trash Cans & Recycling Bins
Spill Kits & Absorbents
Restroom Supplies
Paper Towels & Dispensers
Hand Soap & Dispensers
Lighting & Electrical
Work Lights & Jobsite Lighting
LED Work Lights (Corded)
LED Work Lights (Cordless)
Tripod & Tower Lights
Area & Flood Lights
Headlamps (Hard Hat-Compatible)
Task Lights (Magnetic / Clip-On)
Flashlights & Portable Lighting
Handheld Flashlights
Penlight Flashlights
Lanterns
Jobsite Power Distribution
Extension Cords (Industrial Grade)
Portable Power Stations
GFCIs & Adapters
Electrical Tools
Wire Strippers & Crimpers
Cable Cutters
Conduit Benders
Fish Tapes & Rods
Voltage Testers & Multimeters
Wire Pulling Grips
Wiring & Electrical Supplies
Conduit & Fittings (EMT, PVC, Rigid)
Electrical Tape & Heat Shrink
Material Handling & Storage
Carts & Trucks
Hand Trucks & Dollies
Platform Trucks
Utility Carts
Panel & Drywall Carts
Lifting & Hoisting
Chain Hoists (Manual & Electric)
Lever Hoists / Come-Alongs
Cable Pullers
Pallet Jacks
Engine Cranes & Hoists
Lifting Slings & Straps
Trolleys & Beam Clamps
Tool Storage & Organization
Portable Tool Boxes
Modular Storage Systems (Packout, ToughSystem)
Tool Bags (Open-Top & Zippered)
Tool Belts & Pouches
Tool Backpacks & Rolls
Jobsite & Shop Storage
Jobsite Boxes / Gang Boxes
Tool Racks & Hooks
Storage Bins & Totes
Rigging & Load Securement
Ratchet Straps & Tie-Downs
Shackles & Hooks
Wire Rope Clips & Thimbles
Winches (Manual & Powered)
Plumbing & Drain Cleaning
Pipe Cutting
Pipe Cutters (Copper, Steel, Plastic)
Tubing Cutters
Pipe Cutter Wheels (Replacement)
Pipe Threading
Manual Pipe Threaders & Dies
Power Pipe Threading Machines
Die Heads & Inserts
Pipe Reaming & Deburring Tools
Pipe Working & Bending
Pipe Vises & Stands
Pipe Benders (Manual & Hydraulic)
Tubing Benders
Flaring Tools
Pipe Wrenches
Basin Wrenches & Specialty Wrenches
Drain Cleaning Equipment
Handheld Drain Augers
Drum-Type Drain Machines
Drain Cleaning Cables & Heads
Closet Augers (Toilet)
Soldering & Joining
Soldering Torches & Kits
Solder & Flux
Press Fitting Tools
PEX Tools & Fittings
Plumbing Hand Tools
Strap Wrenches
Pumps (Non-Test)
Sump Pumps
Trash Pumps
Transfer Pumps
Pneumatic
Pneumatic Fastening Tools
Framing Nailers
Crown Staplers
Pneumatic Power Tools
Air Impact Wrenches
Air Ratchets
Air Drills
Air Hammers & Chisels
Air Compressors
Portable Pancake Compressors
Portable Wheeled Compressors
Quiet / Oil-Free Compressors
Pneumatic Accessories
Air Hoses (Rubber, Hybrid, PVC)
Hose Reels
Blow Guns & Nozzles
Air Tool Oil & Lubricants
Safety, Testing, & Security
Eye & Face Protection
Safety Glasses
Safety Goggles
Face Shields
Welding Helmets & Goggles
Hearing Protection
Disposable Earplugs
Earmuffs (Passive)
Respiratory Protection
Disposable Dust Masks
Half-Face Respirators
Full-Face Respirators
Replacement Filters & Cartridges
Hand Protection
General Work Gloves
Cut-Resistant Gloves
Insulated / Cold-Weather Gloves
Chemical-Resistant Gloves
Disposable Gloves (Nitrile, Latex, Vinyl)
Head & Fall Protection
Hard Hats & Safety Helmets
Hard Hat Accessories (Liners, Visors, Lights)
High-Visibility Vests & Apparel
Safety Harnesses
Lanyards & Connectors
Self-Retracting Lifelines
Knee Pads
Test Instruments & Meters
Multimeters & Clamp Meters
Voltage Testers & Detectors
Measuring & Layout Tools
Tape Measures
Laser Distance Measurers
Rotary Lasers
Cross-Line Lasers
Levels (Spirit, Torpedo, Box)
Squares (Speed, Framing, Combo)
Chalk Lines & Chalk
Stud Finders
Protractors & Angle Finders
Lockout / Tagout
Lockout Kits & Stations
Security
Padlocks (Keyed & Combination)
First Aid & Emergency
First Aid Kits
Eye Wash Stations
Fire Extinguishers
Threading & Fabrication
Pipe Threading & Grooving
Roll Groovers
Welding Consumables
Welding Electrodes (Stick)
Welding Gas & Regulators
Solder & Soldering Supplies
Welding Accessories
Welding Gloves
Welding Jackets & Aprons
Welding Curtains & Blankets
Welding Clamps & Magnets
Metal Cutting & Fabrication
Band Saws (Portable & Stationary)
Magnetic Drills & Annular Cutters
Deburring Tools
Sheet Metal Tools
Sheet Metal Brakes & Benders
Rivet Guns & Rivets
Tools
Power Tools – Corded
Corded Drills & Hammer Drills
Circular Saws
Reciprocating Saws
Jig Saws
Miter Saws
Table Saws
Chop Saws / Cut-Off Saws
Angle Grinders
Die Grinders
Bench Grinders
Orbital & Random Orbit Sanders
Polishers & Buffers
Routers & Laminate Trimmers
Planers
Rotary Hammers
Demolition Hammers & Breakers
Oscillating Multi-Tools
Heat Guns
Power Tools – Cordless
Cordless Drill / Drivers
Cordless Hammer Drills
Cordless Impact Drivers
Cordless Impact Wrenches
Cordless Circular Saws
Cordless Reciprocating Saws
Cordless Oscillating Multi-Tools
Cordless Band Saws
Cordless Angle Grinders
Cordless Sanders
Cordless Rotary Hammers
Cordless Routers
Cordless Caulk Guns
Cordless Drywall Screwdrivers
Cordless Shears & Nibblers
Saw Blades
Circular Saw Blades (Wood)
Circular Saw Blades (Metal)
Reciprocating Saw Blades
Jig Saw Blades
Band Saw Blades
Oscillating Tool Blades & Attachments
Router Bits & Accessories
Straight Router Bits
Hand Tools – Striking & Prying
Hammers (Claw, Ball Peen, Framing)
Mallets (Rubber, Dead Blow)
Sledgehammers
Pry Bars & Wrecking Bars
Chisels (Cold & Wood)
Punches & Nail Sets
Hand Tools – Cutting
Utility Knives & Blades
Snips (Aviation, Straight, Offset)
Hacksaws & Blades
Bolt Cutters
PVC & Tubing Cutters
Scissors & Shears
Hand Tools – Gripping & Turning
Pliers (Slip-Joint, Needle Nose, Linesman)
Channel Lock / Tongue & Groove Pliers
Locking Pliers (Vise-Grips)
Adjustable Wrenches
Combination Wrench Sets
Socket Sets & Ratchets
Torque Wrenches
Allen / Hex Key Sets
Screwdrivers (Phillips, Flathead, Torx)
Screwdriver Sets & Multi-Bit Drivers
Hand Tools – Clamping & Holding
C-Clamps
Bar Clamps & Pipe Clamps
Spring Clamps
Locking Clamps
Bench Vises
Outdoor Power Equipment
Chainsaws (Gas, Cordless, Electric)
Chainsaw Bars & Chains
String Trimmers / Weed Eaters
Hedge Trimmers
Pole Saws
Backpack & Handheld Blowers
Vacuums and Accessories
Wet/Dry Vacuums
Portable Wet/Dry Vacuums
Dust Extractors & HEPA Vacuums
HEPA Dust Extractors
Vacuum Accessories
Vacuum Bags (Disposable & Reusable)
HEPA Filters & Replacement Filters
Dust Collection Attachments
Dust Port Adapters
Shop Brands
3
3M
A
ACME UNITED CORP
AERVOE
AIRMASTER FAN CO.
ALCOA FASTENING SYSTEMS
ALEMITE
ALTA INDUSTRIES
AMERICAN LOCK
AMES
AMPCO SAFETY TOOLS
ANDERSON PRODUCTS
APEX
ARROW FASTNER CO
ASCO
ASSOCIATED EQUIPMENT
ATLANTA SPECIAL PRODUCTS
ATLAS COPCO MINING
ATLAS INDUSTRIAL
ATLAS WELDING ACCESSORIES IN
B
BAND-IT-IDEX
BAYCO
BLACK & DECKER
BOSCH
BOSTITCH
BRIEF RELIEF
BRUNNER & LAY, INC.
BRUSHMAN
BRUSHTECH
BUCEYE
BUCKET BOSS
BUNGEECO
C
C.H. HANSON COMPANY
C.S OSBORNE
CAMPBELL
CHAMPION CUTTING TOOL
CHANNELLOCK
CIRC-O-FILE CORP
CIRCLE MANUFACTURING
COFFING HOISTS
COILHOSE PNEUMATICS
COLEMAN CABLE, INC
COLONIAL
COLUMBUS MCKINNON
CONDUX INTERNATIONAL
CONNTEK INTERGRATED SOLUTIONS INC
COUGAR
CRESCENT
CROSBY
CUMBERLAND PRODUCTS
CURRENT TOOLS
CUSTOM LEATHERCRAFT
CUTLER COMMUNICATIONS
D
D&H ENTERPRISES
DAP
DASCO PRO INC.
DBI SALA
DELCART AND ASSOCIATES
DESA
DEWALT
DEWITT BROS TOOL CO
DIAMOND PRODUCTS
DIAMOND RUBBER
DIXON TICONDEROGA
DIXON VALVE & COUPLING
DOW
DURACELL
DYMO
E
E.D. BULLARD
EAGLE INDUSTRIES
EASY REACH SUPPLY
ECOSMART
EKLIND TOOL CO.
EMPIRE LEVEL MFG. CORP.
ENERPAC
EOE, INC.
ESTWING MFG. CO.
EVEREADY BATTERY
EXACT PIPE TOOLS
F
FAIRBANKS COMPANY
FALCON SAFETY PRODUCTS
FEIN POWER TOOLS
FIRESTOP
FLAMBEAU INC.
FLUKE
FREUD
G
GB ELECTRICAL
GEARWRENCH
GEMTOR
GENERAC POWER SYSTEMS
GENERAL MANUFACTURER
GENERAL PUMP & EQUIPT.
GENERAL TOOL MFG
GENERAL WIRE SPRING
GLOBAL EQUIPMENT COMPANY
GO JO INDUSTRIES
GREAT NECK SAW
GREENLEE
GRIPHOIST
GUARDAIR CORP
GVS
H
H.D. HUDSON
HAMILTON CASTORS
HARPER HAND TRUCKS
HILMAN
HK PORTER
HOFFMAN DIAMOND PRODUCTS
HOMECO
HONDA
HONEYWELL
HOUGEN
HUSQVARNA
HYDE TOOLS
I
IDEAL INDUSTRIES INC
IGLOO PRODUCTS
INGERSOLL-RAND CO
INTERNATIONAL TOOL
IRWIN
ITW CCNA
J
J.H. WILLIAMS
JACKSON SAFETY
JAMESON CORP.
JET
JET LUBE
JEWEL MANUFACTURING CO.
JOHN TILLMAN & COMPANY
JOHNSON LEVEL & TOOL MFG.
JUSTRITE MANUFACTURING
K
KARCHER
KENNEDY MFG
KIDDE
KLEIN TOOLS
KNAACK
KNIPEX TOOLS
KRYLON INDUSTRIAL
L
L.S. STARRETT CO.
LA-CO INDUSTRIES
LEATHERMAN TOOL GROUP
LENOX
LEVELOK
LIFT-ALL CO.,INC.
LINCOLN
LITTLE GIANT LADDER
LOCTITE
LOUISVILLE LADDER
LPS LABORATORIES
LUFKIN
LUG ALL
M
M.C.R.
M.K. MORSE
MAGNOLIA BRUSH
MAKITA
MALCO
MARSHALLTOWN
MASTER LOCK
MAYHEW STEEL PROD INC
MEGAPRO
MERCER TOOL CORP
MERIT ABRASIVE
METABO
METALTECH OMEGA
MILWAUKEE TOOLS
MORSE CUTTING TOOL
MORSE STARRETT
MOTOROLA
MR. SHRINKWRAP
MULTIQUIP
MUTUAL SCREW COMPANY
N
NEXEL INDUSTRIES
NEXSTEP COMMERCIAL PRODUCTS
NICHOLSON
NO DOG
NOKORODE
NUPLA
O
OATEY SCS
OKI BEARING
OSHKOSH TOOL CO.
P
PACE MACHINERY
PEERLESS HARDWARE
PLUMB
PONY
PORTER CABLE
POWERS FASTENERS
PROTO
PULLMAN ERMATOR
PYRAMEX SAFETY PRODUCTS
Q
QUALTOOL INC.
QUICK RESPONSE FIRE SUPPLY
QUICK WEDGE
R
RADIANS
RADIATOR SPECIALTY CO
RAYOVAC
RAZOR-BACK
RED DEVIL
REED
RELTON CORP
RIGID
ROPER WHITNEY
RRR SPECIALTY
RUBBERMAID
S
SAIT
SEATEK CO. INC.
SEEKONK MFG. CO., INC
SENSIBLE PRODUCTS
SESAMEE
SHAEFER VENTILATION EQUIPMENT
SHOPVAC
SHURTAPE TECHNOLOGIES INC.
SIMONDS INDUSTRIES
SIMPLEX
SKARNES INC.
SPANCO INC.
SPEEDI-DRI
SPRAYON-TRIFLOW
STANLEY MECHANICS TOOLS
STANLEY TRADE TOOLS
STEINER INDUSTRIES
STIHL
STONE TOOLS, INC.
STREAMLIGHT, INC
SUMNER
SUPER SWEEP
T
TAMCO INC.
TAMPERPROOF SCREW CO INC
TEMPO COMMUNICATIONS, INC.
TILMAN
TINGLEY RUBBER CORP
TRIDON TRIDENT
TRUE TEMPER
TSURUMI
TURTLE & HUGHES INC
U
U.S WIRE & CABLE CORP
UFSS
UNGER ENTERPRISES
UNION TOOLS
UVEX
V
VAUGHAN & BUSHNELL
VERMETTE MACHINE COMPANY INC
VICTOR
VIKING DRILL & TOOL NORSEMAN
VOLTEC INDUSTRIES
W
WALLACE METAL WORK
WALTON COMPANY
WARWOOD TOOL COMPANY
WD-40
WEILER BRUSH CO. INC.
WELLER
WERNER
WERNER LADDER COMPANY
WEST CHESTER HOLOINGS
WHEELER MFG. CORP
WILTON
WISS
WORK AREA PROTECTION CORP.
WORTHINGTON CYLINDERS
WRIGHT TOOL
WYPO
X
XCELITE
Y
YALE HOIST
YORK LADDER INC
Z
ZIP UP
Go
Support
Apply
Log In
View Page Help
Contact Us
HAND TOOLS
SOCKET EXTENSIONS
PRO5661
3/4"DR EXTENSION 8"-1
See more from PROTO
Model: PRO5661
List
$63.46
Log in to order this item
PROTO 3/4"DR EXTENSION 8"-1 - SOCKET EXTENSIONS
