The P3500 is a low velocity, semi-automatic .27 caliber tool which can be used to install .300 head drive pins and 1/4"-20 threaded studs, up to 3" in total length. The P3500 is designed for high speed and repetitive volume applications.Tool Body: Precision Cast AluminumPin Length: 1/2" to 3" Total LengthTool Length: 13-5/8"Load Type: .27 Caliber / 10 Load StripPower Levels: Brown (2), Green (3), Yellow (4), Red (5)Pin Type: Ballistic Point Drive Pin, .300 Head Drive Pin, 8mm Head Drive Pin, 1/4"-20 Threaded Stud