1/2in Dr. 21mm 12-pt. Deep Hand Socket

Genius Tools Deep Hand Socket 21mm 1/2 Inch Drive 12-Point High-Strength Chrome Finish - 437821 Deep Hand Socket SKU: 437821. This 21mm deep hand socket is built for 1/2in drive setups and features a 12-point profile for dependable fastener engagement. With a 78mm (3.07in) overall length, it's suited to reaching deeper fasteners while maintaining controlled fit and consistent handling. Constructed from Chromium-vanadium steel alloy, it is designed for high strength, durability, and anti-corrosive performance. A chrome polished finish supports corrosion resistance and long-term tool appearance, while stamped size markings help keep socket selection quick and organized. Key Benefits 21mm 12-point design helps reduce slippage and fastener rounding. 1/2in drive size fits common ratchets and hand tool drive systems. Deep 78mm (3.07in) length reaches recessed and deep-set fasteners. Chromium-vanadium steel alloy supports high strength and long service life. Chrome polished finish resists corrosion and stands up to shop conditions. Permanently stamped size marking improves organization and faster identification. Meets or exceeds ANSI standards for consistent, professional-grade performance. Designed and made for professional technicians, this socket is built to perform over a lifetime of heavy use.