CrazyEve Leathercraft 1/2/4/6 Prong 4mm 4/25 Inch Chisel Leather Craft Tools Hole Punch Lacing Stitching Perforate Material:High quality steel 2mm prong , 4mm spacing between the hole (Prong width:Approx 2mm, Prong pitch:Approx 4mm) Package: 1 Prong/ 2 Prong/ 4 Prong/ 6 Prong/ 1+2+4+6 Prong Be careful to use,do not drop or let them fall on the floor,Or the prong will broke Normally use together with nylon hammer,compass,sewing needles and thread.we also supply these