Open molded carrying case holding the Klein 66060 6-piece coaxial 6-point impact socket set covering 12 SAE sizes.
Diagram detailing 12 SAE sizes in 6 coaxial socket bodies, 6-point design, color-coded rings, and impact driver compatibility.
Top-down view of six Klein 6-point coaxial sockets organized in a hard storage case displaying high-visibility size callouts.
Six dual-ended Klein 6-point coaxial impact sockets lined up to highlight internal spring-loaded sleeves and drive profiles.
Six 4140 steel coaxial impact sockets standing vertically to display laser-etched SAE size markings and color identification bands.
Close-up of the Klein 1/2 by 3/8-inch 6-point coaxial impact socket displaying yellow color-coded size identification ring.
Close-up of the Klein 5/8 by 7/16-inch coaxial impact socket showing laser-etched markings and red visual identification band.
Side view of the Klein 7/8 by 11/16-inch 6-point coaxial impact socket displaying orange identification ring and stamped markings.
Overhead view of a gloved technician attaching a Klein coaxial socket to a 1/2-inch impact wrench on a bucket truck platform.
Utility worker using a Klein 3/4 by 9/16-inch coaxial socket on an impact driver to tighten overhead pole line mounting hardware.
Gloved contractor holding a cordless impact driver equipped with a Klein coaxial socket to demonstrate tool belt portability.
Industrial technician using a Klein 6-point coaxial socket on an impact driver to secure engine housing bolts in tight spaces.
Open hard-shell storage case holding six Klein 6-point coaxial impact sockets covering 12 SAE sizes from 3/8 to 1-1/8 inch.
Klein Impact Sockets promotional video
Open molded carrying case holding the Klein 66060 6-piece coaxial 6-point impact socket set covering 12 SAE sizes.
Diagram detailing 12 SAE sizes in 6 coaxial socket bodies, 6-point design, color-coded rings, and impact driver compatibility.
Top-down view of six Klein 6-point coaxial sockets organized in a hard storage case displaying high-visibility size callouts.
Six dual-ended Klein 6-point coaxial impact sockets lined up to highlight internal spring-loaded sleeves and drive profiles.
Six 4140 steel coaxial impact sockets standing vertically to display laser-etched SAE size markings and color identification bands.
Close-up of the Klein 1/2 by 3/8-inch 6-point coaxial impact socket displaying yellow color-coded size identification ring.
Close-up of the Klein 5/8 by 7/16-inch coaxial impact socket showing laser-etched markings and red visual identification band.
Side view of the Klein 7/8 by 11/16-inch 6-point coaxial impact socket displaying orange identification ring and stamped markings.
Overhead view of a gloved technician attaching a Klein coaxial socket to a 1/2-inch impact wrench on a bucket truck platform.
Utility worker using a Klein 3/4 by 9/16-inch coaxial socket on an impact driver to tighten overhead pole line mounting hardware.
Gloved contractor holding a cordless impact driver equipped with a Klein coaxial socket to demonstrate tool belt portability.
Industrial technician using a Klein 6-point coaxial socket on an impact driver to secure engine housing bolts in tight spaces.
Open hard-shell storage case holding six Klein 6-point coaxial impact sockets covering 12 SAE sizes from 3/8 to 1-1/8 inch.
Klein Impact Sockets promotional video
KLEIN TOOLS

Klein Tools Impact Socket Set 66060 6 Piece 12 Sizes (1/2 Square Drive 4140 Steel 6 Point Hardware Installation Kit)

Only 2 left
SKU: 66060
$205.99 USD

Description

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Klein Tools 66060 6-Piece 2-in-1 Coaxial Spring-Loaded 6-Point SAE Impact Socket Set

The Klein Tools 66060 6-Piece 2-in-1 Impact Socket Set combines twelve primary SAE hex sizes across six coaxial spring-loaded sockets and includes a 1/4 inch hex to 1/2 inch square drive adapter for industrial hardware installation. Forged from heat-treated 4140 alloy steel, this 3.5 lb ASME B107.2 compliant socket set features a high-torque 6-point design optimized for driving structural hex bolts and square fasteners. Engineered for electrical contractors, power line technicians, and steel erectors, the hands-free spring-loaded socket mechanism lets workers depress inner socket walls directly over bolt heads to immediately transition across twelve core sizes (3/8", 1/2", 7/16", 5/8", 9/16", 3/4", 11/16", 7/8", 13/16", 1", 15/16", 1-1/8") without detaching sockets from 1/2-inch impact wrench drive anvils.

Best Used For:

  • Electric Utility Pole & Infrastructure Bolting: Driving heavy structural SAE lag bolts and utility pole hardware across twelve sizes without changing individual socket bodies.
  • High-Torque Square & Hex Fastening: Engaging 4-point square nuts and 6-point hex bolts securely without rounding corners under high torque loads.
  • Impact Driver & Wrench Conversion: Operating directly on 1/2-inch square drive impact wrenches or adapting 1/4-inch hex impact driver chucks via the included drive adapter.

Key Performance & Safety Features

  • Hands-Free Coaxial Spring-Loaded Action: Inner spring-loaded socket automatically retracts under pressure, enabling seamless hands-free transitions between dual sizes on each socket.
  • 12 SAE Sizes Consolidated in 6 Sockets: Combines 1/2 x 3/8'', 5/8 x 7/16'', 3/4 x 9/16'', 7/8 x 11/16'', 1 x 13/16'', and 1-1/8 x 15/16'' into six single-ended socket bodies.
  • High-Torque 6-Point Socket Geometry: Delivers secure surface contact across fastener flats to maximize torque transfer on both hex heads and square bolts.
  • Forged 4140 Alloy Steel Metallurgy: Premium heat-treated alloy steel construction meets ASME B107.2 standards to absorb extreme rotational shock loads.
  • Cross-Hole Detent Safety Lock: Transverse cross-hole alignment prevents accidental socket detachment from power tool anvils during heavy vibration.
  • High-Visibility Color-Coded Bands: Distinctive painted color rings allow instant visual size identification in dimly lit workspaces.

What's Included

  • (1) 1/2" x 3/8" Coaxial Spring-Loaded 6-Point Impact Socket
  • (1) 5/8" x 7/16" Coaxial Spring-Loaded 6-Point Impact Socket
  • (1) 3/4" x 9/16" Coaxial Spring-Loaded 6-Point Impact Socket
  • (1) 7/8" x 11/16" Coaxial Spring-Loaded 6-Point Impact Socket
  • (1) 1" x 13/16" Coaxial Spring-Loaded 6-Point Impact Socket
  • (1) 1-1/8" x 15/16" Coaxial Spring-Loaded 6-Point Impact Socket
  • (1) 1/4-Inch Hex Shank to 1/2-Inch Square Drive Impact Adapter
  • (1) Hard-Shell Storage Carrying Case

Technical Specifications

Brand Manufacturer Klein Tools®
Model Part Number OEM SKU 66060
Tool Classification System 6-Piece 2-in-1 Coaxial Spring-Loaded Impact Socket Set
Core Metallurgy Material Forged Heat-Treated 4140 Alloy Steel
Input Drive Interface Sizes 1/2 inch Female Square Drive & 1/4 inch Hex Power Shank Adapter
Integrated Socket Sizes (SAE) 1/2x3/8'', 5/8x7/16'', 3/4x9/16'', 7/8x11/16'', 1x13/16'', 1-1/8x15/16''
Socket Point Profile Geometry 6-Point Deep Well Profile
Fastener Safety Retention Cross-Hole Alignment Detent Pin Retention
Manufacturing Quality Standards ASME B107.2 Compliant
Power Driver Tool Compatibility 1/2 inch Impact Wrenches (BAT20CW1) & 1/4 inch Impact Drivers
Overall Carrying Case 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 Pieces (6 Coaxial Sockets + Carrying Case)
Assembled Net Package Weight 3.5 lb (1.6 kg)
Global Trade Item Number GTIN 00092644650888

Pro-Tip: When fastening the smaller inner size on any of these coaxial sockets, press forward firmly so the outer socket compresses its internal spring. The inner 6-point drive will engage the bolt head completely while the outer body stays safely retracted, enabling continuous hands-free operation.