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The No. 9 Universal Button Punch is used to indent several thicknesses of metal, forming a 3/8″ dia. button or dimple that holds the pieces together securely. A common use is on standing seams on roofs to make a watertight fastening. The head of the punch rotates to any position. The ends of the jaws are offset at a 30° angle, permitting close quarter work and a clear view.