Description: Professional Quality Nut Deep Impact 6 Points Socket Set. Type: Deep Impact Sockets Drive Size: 1/2in Use On All Air Powered & Battery Powered Impact Tools/Wrenches, Also Breaker Bars/Strong Arms & Torque Wrenches. Each Socket Has A Drilled Head To Locate Retaining Ball Bearing On Most Breaker Bars & Impact Wrenches To Ensure A Safe Secure Fit. Feature: 1. 1/2″ Deluxe Axle Nut Impact Sockets Set, 9pcs. 2. All Sockets Are 1/2″ Square Drive & 76mm Deep (From Top To Bottom Of Socket) With 6 Sides (Hex Shape) 3. Material Type Chrome molybdenum alloy steel. .