Features 1、Easy to operate, labor saving, fast, fluent processing surface. 2、Safe and dependable, regardless of site or location restrictions. 3、Hydraulic hole opener is light, beautiful and easy to carry. 4、Can be used for metallurgy, petroleum, chemical, electronics, electrical, marine, machinery and other industries to install and repair the opening of wire and pipe, indicator light, instrument switch, etc. 5、Equipped with various of model of different sizes to meet different requirements. Specification Item Type: Hydraulic Knockout Punch Driver Kit Application Range: 22~60mm Tonnage: 8T Plate Thickness: 2mm Stroke: 18mm Equipped Punch Die: φ22mm φ27.5mm φ34mm φ43mm φ49mm φ60mm Package List 1 x Hydraulic Pump 6 Set of Die(One of each size : φ22 φ27.5 φ34 φ43 φ49 φ60) 2 x Piston Rod 1 x Washer 1 x Screw