Unique Bargains Hollow Paper Drill Bit 7mmx75mm for Straight Shank Punching Machine 6mm

Specially used for punching tags, wall calendars, desk calendars, books, and handbags. Suitable for ordinary paper, offset paper, coated paper, grease film paper, leather, fabric etc. Overall quenching, high hardness, not easy to break. 90-degree inner chamfer opening, good edge sharpness and strength, 80% less resistance than traditional technology, not easy to block. Papers should be placed flat when punching. Pay attention to the lubrication of the punch drill. The smaller the pinhole, the slower the speed.