1/2in Dr. 21mm(12pt.) Thin Wall Impact Socket

Genius Tools Impact Socket 21mm 1/2 Inch Drive Thin Wall 12-Point CR-Mo Steel - 453821 Impact Socket This 21mm thin wall impact socket is built for tight-clearance fastening where a standard wall thickness won't fit. The 12-point design helps engagement on compatible fasteners, while the 1/2in drive format keeps it aligned with common impact tools and professional socket systems. Constructed from Chromium Molybdenum Alloy Steel (CR-Mo), it is designed for high strength and durability with anti-corrosive properties. A matte black oxide coating and oil-quenched heat treatment support long-term service with a tough exterior and strong inner core. Key Benefits Thin wall profile reaches tighter clearances without sacrificing impact socket strength. 21mm, 12-point opening supports efficient fit on compatible fasteners. 1/2in drive size integrates with standard impact wrenches and accessories. 40mm overall length keeps the socket compact for confined working areas. Chromium Molybdenum Alloy Steel provides high strength and durability. Oil-quenched heat treatment and black oxide coating enhance long-term wear resistance. Permanently stamped size markings improve tool organization and quick identification. SKU: 453821. Designed for professional technicians, this thin wall CR-Mo impact socket balances access, durability, and easy identification for consistent, repeatable work.