1/2in Dr. 21mm Cr-Mo Thin wall Impact Socket

Genius Tools Impact Socket 21mm Thin Wall 1/2 Inch Drive Chrome Molybdenum CR-Mo Durable Automotive Tool - 443821 Impact Socket This 1/2in drive 21mm thin wall impact socket is built for demanding automotive and shop environments where strength, fit, and fast identification matter. The thin wall profile helps access tight areas, while the compact 40mm (1.57in) overall length keeps handling controlled and efficient. Constructed from Chromium Molybdenum Alloy Steel (CR-Mo), it delivers high strength and durability with anti-corrosive properties. A matte black oxide coating and oil-quenched heat treatment support long-term professional use, and the socket meets or exceeds ANSI standards for quality expectations. Key Benefits 21mm thin wall impact socket fits tight clearances in automotive work. 1/2in drive design supports impact applications with dependable engagement and strength. CR-Mo alloy steel construction provides high strength and long-term durability. Oil-quenched heat treatment delivers tough exterior and superior inner core strength. Matte black oxide coating helps resist corrosion in demanding shop conditions. Permanently stamped size markings enable fast, reliable identification and organization. SKU: 443821. Designed and made for professional technicians, this impact socket is built to perform over a lifetime of heavy use. Its compact 40mm length, thin wall access, and clearly stamped sizing make it practical for day-to-day service work while maintaining ANSI-level expectations.