The design drives the side of the fastener instead of the corner répondre: The Sunex 236MD is constructed from high-strength chrome molybdenum steel, which enhances durability and resistance against wear and tear. This... No doubt, the strongest impact socket line around. 1/2 Inch Drive Impact Socket Sunex 236 1/2 Drive 1-1/8 Impact Socket | Chrome Molybdenum Alloy Steel, Radius Corner Design Sunex Impact Socket Heavy Duty Impact Tool CARBYNE 1/2-Inch Drive 36 Mm Deep Impact Socket, 6-Point | Chrome For Impact Wrench Radius corner design - to extend the life of fasteners Sunex Tools 236ZMD - 1/2" Drive 36MM 12 Point Impact Socket With solid durability that keeps them driving through job after job, we've got sizes and styles enough to fulfill any need. Sunex Tools impact sockets tackle the toughest jobs with a chrome molybdenum alloy steel grip that won't let go.