hydraulic punch driver 8.9T punch thinckness:3mm hole die max 2 inch hand hole punch driver , hole punch driver hydraulic punch driver,hole punch driver,hand hole punch driver1. Wide hole digging range , which can be used on switch board , power transmission panel, meter plate, steel plate.2. It covers six kind of dies six kind of dies. two bolts ,one answer.hole digger unit and plastic carrying ...