... 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 ... 10mm, used in making machine Pneumatic hole punch machine for plastic bags, plastic bags, leak hole, food bag hook holes and so ... and other materials, products can be washed off as a single-layer material thickness 0.02mm plastic bag, speed up to ...