The H&S Uni-Wire Pulling System is designed for creases and large damaged areas. Using your stud gun welder, attach the Uni-Wire (also known as wave wire) to the contour of the area to be pulled. Attach either the four or nine fingered claw to the wire and pull. The claw will begin to pull the lowest area first until the dent or crease has returned to its original shape. Kit includes 4-fingered claw, 9-fingered claw, 1/2 lb of wave wire and a wire weld tip conversion kit. Everything you need to use with your stud welder. Will work with H&S and Motorguard Stud Welders.