1/2in Dr. 21mm Thin Wall Deep Impact Socket

Genius Tools Impact Socket 21mm Semi-Deep Thin Wall 1/2 Inch Drive Chrome Molybdenum (CR-Mo) - 445221 Impact Socket This 21mm semi-deep thin wall impact socket is built for 1/2in drive impact use where fasteners sit in tighter clearances. The 6-point design supports secure engagement, while the semi-deep length helps reach recessed hardware without moving up to a deep socket. Constructed from Chromium Molybdenum alloy steel (CR-Mo), it's made for high strength and durability. Heat treatment through oil quenching and a matte black oxide finish provide a tough exterior and strong inner core. Size markings are stamped for quick, permanent identification in the drawer or on the cart. Key Benefits Thin wall profile improves access around fasteners with tighter clearances. 6-point impact design helps reduce rounding while transferring torque effectively. 1/2in drive and 52mm length suit many semi-deep impact applications. Chromium Molybdenum alloy steel (CR-Mo) delivers strength and durability under load. Oil-quenched heat treatment supports a tough exterior and strong inner core. Matte black oxide coating adds anti-corrosive protection for long-term service. Permanently stamped size marking speeds selection and supports better tool organization. Designed for professional technicians, it delivers consistent fit and long service life in demanding shop conditions while maintaining the thin-wall clearance advantages expected from an impact socket.