... 1.Butterfly hole punch,hole punch,used in making machine 2.Pneumatic hole punch machine for plastic bags,plastic bags,leak hole Butterfly hole punchHole punching ... ~ 10mm, used in making machine Pneumatic hole punch machine for plastic bags, plastic bags, leak hole, food bag hook holes and so ... on. PE, PP, OPP, PO, PVC, PPE, CPE and other ...