The hydraulic hole puncher is used for punching for metal plate,applying to L and H style flat copper and busbar.
The puncher could punch 0.41"(ф10.5mm),0.54"(ф13.8mm),0.67"(ф17.5mm),0.81"(ф20.5mm).
Single oil return, punch dies made of high carbon tungsten steel and not easy to wear off.
The end of the puncher is designed with flat seat,smooth and not fall.
This is a hand-held punch,and it is easy to take,easy to operate.