•Drive end chamfer and four detents help provide quick positive engagement with drive tool on any of the socket drive walls. •Tight tolerances for snug fit on fastener. •Large clearance holes, concentric opening and nut end chamfer make it easy to position socket on fasteners. •Made from high strength steel to help minimize wall thickness and provide access to fasteners in recesses and where nuts and bolts protrude. •Impact sockets are used wherever powered drive tools are used to install or remove fasteners. •Impact sockets are designed to withstand the high torque and force associated with impact tools in repetitive application. •Use extensions to gain access to fasteners in locations that would otherwise be difficult to reach. •Male square is oriented in line with female squares for use with fixed head torque wrenches. •Full chamfer at drive opening (when applicable) for easy engagement with drive tools.