1、Hardening Heat Treatment: After hardening heat treatment, it is durable and can solve the narrow parts that are inconvenient to be hit with a hammer. 2、12 Punches: Screw punch tool is equipped with 12 punches, various sizes, which are convenient for your use and can meet your different needs. 3、Low Noise: Compared with ordinary punches, Leather screw hole punch has lower noise, convenient and fast use and stable performance. 4、Log Sticks: The sticks are made of logs, and the connecting rods are made of brass, with excellent workmanship. 5、Scope of Application: Screw punch is suitable for DIY leather punching, the appearance is exquisite and compact, it is an excellent choice for DIY leather. 2 x Hole Punch10 x Punch2 x Storage Box Item Type: Screw Hole PunchMaterial: Brass, LogSpecifications: With 12 punches, Approx. 1.5mm / 0.06in x 2, Approx. 2mm / 0.08in x 2, Approx. 2.5mm / 0.1in x 2, Approx. 3mm / 0.12in x 2, Approx. 3.5mm / 0.14in x 2, Approx. 4mm / 0.16in x 2 (Replaceable Punch)Treatment: Hardening Heat TreatmentFunction: DIY Leather Art Punching