Electric Hydraulic Hole Punch Die Set for 4mm Round Holes
✔️ 40Cr steel dies, HRC56-58, CH75 compatible, set includes upper/lower

This electric hydraulic hole punch die set uses 40Cr steel to deliver durable, precise holes and works with CH75 electric punching machines. It's ideal for punching angle steel, angle iron, sheets, and metal components in electrical, construction, and metalworking settings.

✅ Upper die dia: 4 mm
✅ Lower die dia: 40 mm
✅ Upper die height: 43 mm
✅ Lower die height: 20 mm
✅ Material: 40Cr steel
✅ Hardness: HRC56-58
✅ Includes upper and lower die pair
✅ CH75 machine compatibility

Part	Dimension
Upper die dia	4 mm (0.16")
Upper die height	43 mm (2.09")
Lower die height	20 mm (0.79")
Lower die dia	40 mm (1.57")

💡 What is a hydraulic punch die set used for in metalworking? This handy tool helps you punch clean, round holes in metal parts quickly and consistently. - Useful for punching round holes in steel, aluminum, and other sheet metals - Works with CH75 electric punching machines for efficient output - Made from durable 40Cr steel with solid wear resistance - Includes both upper and lower dies for quick tool changes