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3/8" DR 21MM 12PT SKT* - Crescent Tool

Part #: KD528121

The Crescent Tool KD528121 is a professional-grade 3/8" drive, 21mm 12-point socket designed for demanding automotive and industrial applications. Engineered for reliable performance, this socket provides a secure grip on fasteners, reducing the risk of rounding and ensuring efficient torque transfer. It is an essential addition to any professional mechanic's or technician's toolkit.

Key Features

  • 12-Point Design: Provides multiple contact points for improved grip on hex fasteners, especially useful in confined spaces or when working at various angles.
  • Durable Construction: Manufactured from high-strength alloy steel, offering exceptional durability and resistance to wear and tear in professional environments.
  • Corrosion Resistant Finish: Helps protect the socket from rust and corrosion, extending its lifespan and maintaining its appearance over time.
  • Clear Size Markings: Stamped or laser-etched markings ensure quick and easy identification of the 21mm size, streamlining workflow.
  • Professional Grade: Built to meet or exceed ASME standards, ensuring reliable performance and a long service life under heavy use.

Applications

This 3/8" drive 21mm 12-point socket is ideal for a wide range of tasks encountered by professional automotive technicians and industrial mechanics. It is commonly used for tightening and loosening fasteners on engine components, suspension systems, brake assemblies, and other machinery where a 21mm hex fastener is present. Its 12-point configuration makes it particularly effective for working with stubborn or slightly rounded bolts, providing a robust engagement for efficient operation.

Only 2 left in stock - order soon

$4.47

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  • Model: 444098
  • Shipping Weight: 0.2lbs
  • UPC: 082171508288
  • Manufacturers Part #: KD528121
  • Manufactured by: Crescent Tool
  • Also Known As: KD528121

This product was added to our catalog on Sunday 31 May, 2026.

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