YP Stainless Steel 1/ 2 / 4 /6 Prong Flat Chisel Leather Craft Hole Punch Tool Kit 4MM One sharp rhombus tooth is helpful to punch quickly and effortlessly Made of stainless steel. Ideal for making holes in soft materials such as canvas, leather, soft plastics and textiles. Model: 1 Prong/2 Prong/4 Prong/ 6 Prong. Prong pitch: 4 mm (appr 0.16 inch).