1、Includes 6pcs interchangeable punch head sized 2/5/3/5/4/5mm to punch different diameter of round holes. 2、Fluted design for easy exhaust of leather waste. 3、Heat treated and hardened for edges that keep sharpness. 4、Non-slip knurling design allows you to grasp the punch tool steadily so you can punch holes more accurately. 5、Suitable for punching holes on leather, paper, canvas, rubber, etc. Features: Includes 6pcs interchangeable punch head sized 2/ 2.5/3/ 3.5/4/ 4.5mm to punch different diameter of round holes. Fluted design for easy exhaust of leather waste. Heat treated and hardened for edges that keep sharpness. Non-slip knurling design allows you to grasp the punch tool steadily so you can punch holes more accurately. Suitable for punching holes on leather, paper, canvas, rubber, etc. Gently punch a circle with the punch to make sure it is the hole you want. Hit the butt of the hole punch with a standard hammer. It is best to use medium density wood or plastic as a backing. Specification: Material: Steel Color: Silver, Black Punch Head Size: 2/ 2.5/3/ 3.5/4/ 4.5mm Rod Length: 75mm/3in Punch Head Length: 23mm/ 0.9in   Package List: 1 x Punch Rod 6 x Punch Head 1 x Wrench