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4440M-21 1/2 Square Drive Universal Socket 21 mm 6 Point Length - Koken

Part #: 4440M-21

The Koken 4440M-21 1/2 Square Drive Universal Socket is a professional-grade tool designed for demanding automotive and industrial applications. This 21 mm, 6-point universal socket provides technicians with the flexibility and durability required to access and secure fasteners in challenging, restricted environments. Engineered for consistent performance, it is an essential addition to any professional toolbox.

Key Features

  • Universal Joint Design: Enables angled access to fasteners, making it ideal for tight or obstructed areas where standard sockets cannot reach.
  • 6-Point Configuration: Provides a secure and positive grip on hex fasteners, reducing the risk of rounding and ensuring efficient torque transfer during loosening or tightening.
  • High-Quality Construction: Crafted from robust materials, Ko-ken tools deliver a blend of durability and accuracy, designed to withstand the rigors of daily professional use.
  • Precision Manufacturing: Ensures a precise fit on fasteners, contributing to reliable operation and extended tool life.
  • 21 mm Size: Specifically dimensioned for common fastener applications requiring a 21 mm socket.

Applications

This Koken universal socket is an indispensable tool for professional technicians and mechanics across various sectors. Its design makes it particularly effective for:

  • Servicing aluminum wheel nuts where access is often very tight, requiring an angled approach.
  • Reaching fasteners in confined engine bays or undercarriage components during vehicle maintenance and repair.
  • Working on industrial machinery and equipment where fasteners may be positioned in awkward or hard-to-reach locations.
Only 5 left in stock - order soon
List: $44.76 Save: $10.24

$34.52

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  • Model: 423249
  • Shipping Weight: 0.39lbs
  • UPC: 4991644082131
  • Manufacturers Part #: 4440M-21
  • Manufactured by: Koken
  • Also Known As: KKN4440M-21

This product was added to our catalog on Monday 04 May, 2026.