Open hard-shell carrying case organizing the Klein 66010 6-piece coaxial socket set with color-coded 12-point impact tools.
Diagram detailing 12 SAE sizes across 6 single-ended sockets, color-coded rings, high-torque rating, and 12-point geometry.
Hard-shell molded storage case holding six Klein coaxial 2-in-1 impact sockets with embossed dual-size slot markings.
Lineup of six Klein 12-point coaxial impact sockets showing laser-etched SAE size callouts from 3/8 to 1-1/8 inches.
Klein 1/2 x 3/8-inch coaxial impact socket displaying its yellow identification band and 1/2-inch square drive end.
Klein 5/8 x 7/16-inch 12-point impact socket featuring a red identification band and 4140 alloy steel construction.
Klein 7/8 x 11/16-inch 2-in-1 impact socket with an orange identification ring and spring-loaded inner wall mechanism.
Klein 1 x 13/16-inch coaxial impact socket showing a purple identification band and 1/2-inch drive connection interface.
Klein 1-1/8 x 15/16-inch impact socket with a green identification ring and 12-point geometry for heavy utility fasteners.
Gloved utility worker using a blue 3/4 x 9/16-inch Klein socket on a power impact tool to tighten pole hardware.
Open Klein hard case storing six color-coded 2-in-1 coaxial sockets to organize 12 SAE sizes on utility job sites.
2-in-1 Impact Socket Set (Cat. No66010) promotional video
Open hard-shell carrying case organizing the Klein 66010 6-piece coaxial socket set with color-coded 12-point impact tools.
Diagram detailing 12 SAE sizes across 6 single-ended sockets, color-coded rings, high-torque rating, and 12-point geometry.
Hard-shell molded storage case holding six Klein coaxial 2-in-1 impact sockets with embossed dual-size slot markings.
Lineup of six Klein 12-point coaxial impact sockets showing laser-etched SAE size callouts from 3/8 to 1-1/8 inches.
Klein 1/2 x 3/8-inch coaxial impact socket displaying its yellow identification band and 1/2-inch square drive end.
Klein 5/8 x 7/16-inch 12-point impact socket featuring a red identification band and 4140 alloy steel construction.
Klein 7/8 x 11/16-inch 2-in-1 impact socket with an orange identification ring and spring-loaded inner wall mechanism.
Klein 1 x 13/16-inch coaxial impact socket showing a purple identification band and 1/2-inch drive connection interface.
Klein 1-1/8 x 15/16-inch impact socket with a green identification ring and 12-point geometry for heavy utility fasteners.
Gloved utility worker using a blue 3/4 x 9/16-inch Klein socket on a power impact tool to tighten pole hardware.
Open Klein hard case storing six color-coded 2-in-1 coaxial sockets to organize 12 SAE sizes on utility job sites.
2-in-1 Impact Socket Set (Cat. No66010) promotional video
KLEIN TOOLS

Klein Tools Impact Socket Set 66010 6 Piece 2 in 1 12 Point SAE (1/2 Square Drive 4140 Steel Coaxial Spring Pole Hardware Kit)

Only 2 left
SKU: 66010
$205.99 USD

Description

Klein promotional logo logout

Klein Tools 66010 6-Piece Coaxial 2-in-1 12-Point Impact Socket Set

The Klein Tools 66010 6-Piece Impact Socket Set integrates twelve primary imperial hex dimensions into six dual-ended coaxial sockets designed for utility pole line installation and electrical maintenance. Forged from heat-treated 4140 alloy steel, this 3.5 lb (1.6 kg) ASME B107.2 compliant set mounts directly onto standard 1/2-inch square drive power impact wrenches. Featuring internal spring-loaded coaxial socket sleeves across sizes ranging from 3/8-inch to 1-1/8-inch, this high-torque driving system allows overhead power line technicians and electrical contractors to compress inner socket walls directly over bolt heads for instant, hands-free size changes without detaching socket units or removing protective gloves aloft.

Best Used For:

  • Utility Pole Hardware Servicing: Driving and removing cross-arm lag bolts, pole steps, transformer mounts, and hardware brackets on electrical distribution structures.
  • Square & Hex Fastener Installation: Engaging 4-point square nuts and 6-point hex bolts using flexible 12-point socket geometry that simplifies positioning in tight aerial spaces.
  • High-Torque Power Impact Driving: Connecting onto 1/2-inch square drive impact wrenches to deliver continuous high rotational torque without rounding fastener corners.

Key Performance & Safety Features

  • 12 SAE Sizes in 6 Sockets: Houses 1/2"x3/8", 5/8"x7/16", 3/4"x9/16", 7/8"x11/16", 1"x13/16", and 1-1/8"x15/16" sizes in six coaxial tools.
  • Hands-Free Spring-Loaded Action: Inner socket sleeve depresses under forward pressure to instantly engage larger hex sizes without stopping for manual tool adjustments.
  • High-Torque 12-Point Geometry: Universal 12-point profile provides multi-angle alignment over both standard hex heads and square utility nuts.
  • Forged 4140 Alloy Steel Metallurgy: Premium heat-treated alloy steel satisfies ASME B107.2 standards to withstand extreme power tool impact torque shock.
  • Transverse Cross-Hole Safety Retention: Cross-hole pin alignment holds sockets locked securely onto impact wrench drive anvils during severe vibration.
  • Color-Coded Visual Identification: Distinct color rings enable rapid size detection in dimly lit work areas or organized tool bags.

What's Included

  • (1) Klein Tools 1/2" x 3/8" Coaxial 12-Point Impact Socket
  • (1) Klein Tools 5/8" x 7/16" Coaxial 12-Point Impact Socket
  • (1) Klein Tools 3/4" x 9/16" Coaxial 12-Point Impact Socket
  • (1) Klein Tools 7/8" x 11/16" Coaxial 12-Point Impact Socket
  • (1) Klein Tools 1" x 13/16" Coaxial 12-Point Impact Socket
  • (1) Klein Tools 1-1/8" x 15/16" Coaxial 12-Point Impact Socket
  • (1) Hard-Shell Storage Carrying Case

Technical Specifications

Brand Manufacturer Klein Tools®
Model Part Number OEM SKU 66010
Tool Classification System 6-Piece Coaxial 2-in-1 12-Point Impact Socket Set
Core Metallurgy Material Forged Heat-Treated 4140 Alloy Steel
Primary Input Drive Interface 1/2 inch Square Drive Anvil
Integrated SAE Socket Sizes 1-1/8x15/16'', 1x13/16'', 7/8x11/16'', 3/4x9/16'', 5/8x7/16'', 1/2x3/8''
Socket Point Profile Geometry 12-Point Deep Well Profile
Fastener Safety Retention Transverse Cross-Hole Detent Pin Retention
Manufacturing Quality Standards ASME B107.2 Compliant
Specialized Feature Capabilities Coaxial Hands-Free Spring-Loaded Adjustment
Overall Unit Dimensions 4.4 inches L x 2.3 inches W x 8.8 inches H (11.2 x 5.8 x 22.4 cm)
High-Voltage Insulated Frame No (Uninsulated - do not use on energized electrical circuits)
Total Piece Count 6 Impact Sockets + Storage Carrying Case
Assembled Net Package Weight 3.5 lb (1.6 kg)
Global Trade Item Number GTIN 00092644650529

Pro-Tip: To drive the smaller inner hex size on any socket, position the head over the nut and push forward firmly so the internal coaxial spring compresses completely. To engage the larger outer size, ease forward pressure to allow the outer socket walls to grip the fastener shoulders.