Heavy duty impact extension bar lets you confidently extends the reach of your power tools Premium Chrome Molybdenum steel tempered with our proprietary heat treatment process to withstand more torque from power tools 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 tools Spring-loaded ball detent holds sockets securely in place 1/2 in. drive 3 in. long impact extension bar, Weight: 0.3 Pounds, Manufacturer: Capri Tools