The Grey Pneumatic 4235MC is a heavy-duty 1" drive combination Budd wheel impact socket. It is a highly specialized automotive tool engineered explicitly for removing and installing Budd-type wheel fasteners commonly found on large trucks, buses, and trailers. Key Technical Specifications Drive Size: 1" square drive (built for high-torque 1" impact wrenches). Socket Dimensions: 35mm x 17mm square. Design Feature: It features a dual-opening combination design. The 35mm opening handles the outer hex nut, while the integrated 17mm square opening grabs the inner square stud, eliminating the need to constantly switch between two separate sockets. Material: Forged from premium high-quality Chrome-Molybdenum (Cr-Mo) alloy steel. It is fully heat-treated to safely withstand the massive, repeated torque loads of industrial air impact tools. Weight: Approximately 2.19 lbs.