Description: 100% brand new Carbon steel material, sturdy and sharp edge, durable in use Great for handcraft of belt, gaskets, leather, paper, plastic, vinyl, rubber etc Easy to use, just place punch in position and strike firmly with hammer or mallet Six deferent sizes Specification: Material: Carbon steel Size Chart: Size: 3mm; 4mm; 5mm; 6mm; 7mm; 8mm Package Includes: 6 x Hole Punch