A 10-piece Klein Tools 66055 impact flip socket set organized in a heavy-duty grey carrying case, featuring 5 color-coded 2-in-1 sockets and 4 specialized drive adapters.
Infographic showing the contents of the Klein Tools 66055 set, including 4 versatile drive adapters for 1/2-inch detent and 7/16-inch hex compatibility, alongside a range of SAE socket sizes from 1/2 to 1-1/8 inches.
A row of five Klein Tools 2-in-1 impact flip sockets with a durable no-spring mechanism, showing various color-coded ID bands for quick size identification during utility work.
Detailed macro view highlighting the 12-point socket grip geometry for a secure hold on fasteners and the bright orange color ID band used for rapid tool selection.
A 10-piece Klein Tools 66055 impact flip socket set organized in a heavy-duty grey carrying case, featuring 5 color-coded 2-in-1 sockets and 4 specialized drive adapters.
Infographic showing the contents of the Klein Tools 66055 set, including 4 versatile drive adapters for 1/2-inch detent and 7/16-inch hex compatibility, alongside a range of SAE socket sizes from 1/2 to 1-1/8 inches.
A row of five Klein Tools 2-in-1 impact flip sockets with a durable no-spring mechanism, showing various color-coded ID bands for quick size identification during utility work.
Detailed macro view highlighting the 12-point socket grip geometry for a secure hold on fasteners and the bright orange color ID band used for rapid tool selection.
KLEIN TOOLS

Klein Tools Flip Socket Set 66055 2-in-1 Impact (5 Piece 12-Point Alloy Steel Hex Drive SAE Lineman Pole Line Hardware Fastening Kit)

In stock
SKU: 66055
$124.99 USD

Description

Klein promotional logo logout

Professional 12-Point Impact Rated Flip Socket Set for Utility Hardware

The Klein Tools 66055 is a heavy-duty 5-piece 2-in-1 impact flip socket set engineered with a spring-free direct-flip mechanism for utility pole line construction and underground power distribution maintenance. Forged from high-strength alloy steel with a rust-resistant black phosphate finish, these sockets feature a precision 12-point geometry that ensures a secure, high-torque grip on heavy outdoor hardware while preventing fastener rounding. This impact-rated lineman kit includes essential drive adapters and consolidates ten hardware sizes to optimize jobsite efficiency and minimize tool pouch weight.

Best Used For:

  • Pole Line Construction: Installing and tightening heavy-duty crossarm bolts and structural pole hardware at high heights.
  • Underground Power Distribution: Securing terminal connections and high-torque mechanical lugs inside enclosed outdoor distribution boxes.
  • Utility Infrastructure Maintenance: Executing high-speed fastener removal or installation on weather-exposed structural steel brackets.

Key Performance & Safety Features

  • Direct-Flip Design: No-spring mechanism provides robust field reliability, allowing immediate switching between dual fastener sizes.
  • 12-Point Precision Geometry: Maximizes contact surface area on hex hardware to deliver reliable torque transfer without stripping fastener heads.
  • Alloy Steel Construction: Engineered and heat-treated to absorb the continuous, severe shock forces of professional impact wrenches.
  • Black Phosphate Coating: Provides professional-grade resistance against corrosion and rust in harsh, damp outdoor environments.
  • Color-Coded Sizing Rings: High-visibility bands on each socket allow for instantaneous selection and layout verification on the jobsite.

What's Included

  • (5) 2-in-1 Impact Flip Sockets
  • (2) 1/2-Inch Detent x 3/8-Inch Adapters
  • (2) 7/16-Inch Hex x 1/2-Inch Square Adapters
  • (1) Hard Shell Storage Carrying Case

Technical Specifications

Tool Type: Impact-Rated Flip Socket Set
Socket Geometry: 12-Point Precision
Drive Sizes: 1/4 in. Hex / 1/2 in. Square
SAE Sizes Included: 1/2x5/8, 3/4x9/16, 7/8x11/16, 13/16x1, 15/16x1-1/8 in.
Material: Forged Alloy Steel
Finish: Black Phosphate (Rust Resistant)
Overall Kit Length: 8.24 in.
Overall Kit Height: 2.84 in.
Total Piece Count: 10 Pieces (Sockets, Adapters, Case)
Compliance Standards: ASME B107.17M / B107.4
Total Kit Weight: 5.6 lbs.

Pro-Tip: When deploying these sockets with cordless impact wrenches on weather-worn pole line hardware, clear any loose surface scale or rust buildup from the nut prior to engagement. This ensure full 12-point seat depth and maximum torque transfer without stress concentration points.