This is a PDR tool for a twisting motion or a picking motion, Twick. The Twick works great on aluminum panels. The Twick handle has an overall length of 5 inches. The rod length is 20″ for a total length of 25″ The top black part is adjustable to give more leverage than just a death grip, but still rotate out of the way. This tool shaft is hardened for high strength and is a 5/16 diameter. There are four different tips options on this tool. Chair tip, 1/4 ball, 90, and original trick tip that is 45º for more drive, but still slight enough to get into tighter spaces.