Feature • It contain hydraulic punch driver. • With the help of hydraulic system, making holes by hand become fast and easy. • Die could be OEM. • With round dies MAP10-4, punching capacity can be reached 4” (MAP10-4 Dies sizes: 2 1/2”(Φ76.1mm), 3”(Φ88.9mm) , 3 1/2”(Φ102.8mm) 4”(Φ115.5mm) • Plastic case package for easy carrying and well tool protection. • Hole set include: 1*pump（CP-180）,1*hydraulic ram,2*draw stud, 1*spacer,1*oil pipe,6*dies set. Parameters Model SKP-15 Stainless Steel plate Max thickness 1.6mm Mild steel plate Max thickness3.2mm Output 15 T Oil Capacity 55CC Working Pressure 600bar Ram Stroke 25 mm Weight 6.2kg Included Dies Set: Round Dies 1/2” (Φ21.8mm) , 3/4”(Φ27.6mm),  1”(Φ34.1mm),  1 1/4”(Φ42.7mm),  1 1/2”(Φ48.7mm),   2”(Φ60.2mm) Square Dies 32*32mm Application The knockout punching tools main work for switch board, distribution box and electrical working, State Grid construction, underground cable construction, Building construction etc.