Product Description10″ Pro Rotary Punch* 45# carbon steel punching head,blacked and heat treated* Hole sizes:round hole:3.5;4.0;4.5mm Flat hole:6.6×3.1;7.5×36.mm Oval hole:6.1x4mm * Necessary tool in factory store,office and hotel and it widely used in punching round holes into soft materials leather, canvas, rubber,plasic and catdboard
