This is a PDR tool for a picking motion or a twisting motion. The Twick works great on aluminum panels. The Twick handle has an overall length of 5 inches, with the Texilium part measuring 4.5. 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. Tip angle of 45º for more drive, but still slight enough to get into tighter spaces.