1、This set contain 2 hole, 4 hole, 6 hole prong chisel, which possess neat punching effect 2、The product have good wear resistance and impact resistance, not easy to be damaged 3、After polishing process punch tool is comfortable to hold, which will not hurt your hands 4、Round hole prong chisel is made of high‑carbon steel material with strong structure 5、Possess high temperature resistance, fireproof and hardness, firm texture is not easy to twist off 3 x Silver Prong Chisel3 x Black Prong Chisel Item Type: Prong chiselMaterial: High-carbon steelProng Chisel Length: Approx. 10.5cm / 4.1inPurpose: Leather punchingPunching Diameter: Hole Diameter: Approx. 1mm / 0.04in, Hole Distance: Approx. 4mm / 0.16inSpecification: Silver (2 hole x 4mm , 4 hole x 4mm , 6 hole x 4mm), black (2 hole x 4mm , 4 hole x 4mm , 6 hole x 4mm)Packing List: 3 x Silver prong chisel, 3 x black prong chisel