The PS-25 is a solid state capacitor discharge (CD) stud welding system designed for welding various standard or metric threaded studs from #4-40 (M3) to 1/4"-20 (M6) thread. It consists of the power pack, weld gun and ground cable. The PS-25 is capable of making up to 20 welds per minute on steel and stainless steel. A 205 piece accessory kit includes 50 each of four different steel CD studs, four different collet chucks and a hex key.