Punch Drill: Punching dia.: 3mm / 0.12″; punching length: 28mm / 1.1″; shank dia.: 10.7mm-11.7mm / 0.42″-0.46″; total length: 70mm / 2.76″. It is polished, hardened to 52-55HRC
Applications: Specially used for punching tags, wall calendars, desk calendars, account books, and handbags. Suitable for ordinary paper, offset paper, coated paper, grease film paper, leather, fabric etc.
Features: 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
Easy To Use: Papers should be placed flat when punching. Pay attention to the lubrication of the punch drill. The smaller the pinhole, the slower the speed
Notice: If the punch is blocked, it should be removed and cleaned up in time and reinstalled for use. It is often waxed and lubricated (candle or soap is a good substitute) at the cutting edge of the drill