Powerful heavy-duty powder actuated tool, for installing 3/8" threaded studs into concrete and steel. This tool features an easy load ejector and has a low re-coil for greater operator comfort. The P3801 is independent of any external power source saving you time and money.Tool Body: Precision Cast AluminumPin Length: 1/2" to 3" Total LengthTool Length: 14"Load Type: .27 Caliber Short and LongPower Levels: Red (5), Purple (6)Pin Type: 1/4" to 3/8" Threaded Stud and 3/8" Headed Drive Pins