Grey Pneumatic sockets are designed for professional tool users. Made of high quality alloy steel. Engineered specifically for use with impact tools. Benefits of the GP Impact Socket High Torque drive: Increased strength, easier access to tight areas, and reduced wear. 6-Point 1/2 Drive 19mm Deep Universal Drive End 32mm Socket End 28mm Bolt Clearance Depth 40mm Hex Depth 25mm Length 90mm Lifetime Warranty