1.Butterfly hole punch,hole punch,used in making machine 2.Pneumatic hole punch machine for plastic bags,plastic bags, ... Φ2 ~ 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 materials, products can be washed off as a ...