Premium Chrome Molybdenum steel tempered with our proprietary heat treatment process to withstand more torque from power tools Trusted by professionals, the Capri Tools high performance sockets are what you need for the job at hand Expertly coated with manganese phosphate, the preferred coating in military and aerospace, which offers superior protection and corrosion resistance compared to black oxide coating on other impact sockets Expertly coated with manganese phosphate, the preferred coating in military and aerospace, which offers superior protection and corrosion resistance The Capri Tools Impact Socket is a collection of most frequently used deep impact sockets for trucks and heavy equipment. We use premium Chrome Molybdenum steel tempered with our proprietary heat treatment process to make these deep impact sockets. They are durable and specifically made to withstand high torque from power tools. Each item is expertly coated with manganese phosphate, the preferred coating in military and aerospace, which offers superior protection and corrosion resistance compared to black oxide coating on other deep impact sockets. The 6-point WaveDrive design grips fasteners more tightly than traditional design, preventing fastener rounding and giving you more leverage. Meets and exceeds ASME B107.110 standards.