... .Butterfly hole punch,hole punch,used in making machine 2.Pneumatic hole punch machine for plastic bags,plastic bags,leak hole Press ... Machine Hole punching machine, standing specifications Φ2 ~ 10mm, used in making machine Pneumatic hole punch machine for plastic bags, ... , products can be washed off as a single-layer material thickness 0.02mm plastic bag, speed up to 280 times / ...