Utoolmart 4mmx70mm Straight Shank Punching Machine Hollow Paper Drill Bit Straight Shank Lock Type Paper Tag Punching 35mm Drilling Depth 2pcs

Description

🕳️ Punch Perfectly, Work Effortlessly – The Ultimate Tag Drill Bit Upgrade

The Utoolmart 4mmx70mm Straight Shank Punching Machine Drill Bit delivers precision 4mm diameter holes up to 35mm deep, crafted from hardened steel (52-55HRC) for exceptional durability. Featuring a 90-degree inner chamfer, it reduces punching resistance by 80%, ensuring smooth operation across various materials including paper, leather, and fabric. Its wax-coated sharp edge and easy maintenance make it a reliable tool for professional-grade paper tagging and drilling tasks.