Used for wood perforation, spherical tip installation door, drawer tip, plastic products, wood, plywood, etc, Trepanning smoother, less noise.<br> Sharp edge, high hardness, precise positioning, high precision, cut, impact strength, high toughness.<br> Enable woodworkers to drill holes without having to drill through the material when a clean and precise down on a hole.<br> of high-quality alloy blade, blade make more sharp and durable, it is head to take bow curved, advantageous for chip removal, perforation is more efficient.<br> Suitable for handheld drill, stand motor drill and mobile band type magnetism drill.<br> Color: Gray<br> Material: HSS<br> Diameter: 60mm<br> length: 80 mm<br> Shaft length: 65mm<br> Shaft diameter: 7 mm-10 mm<br> Head length: 15 mm<br> Hardened and tempered, carbon steel construction.<br> Package Include: 1 X Art drills Pipe drills<br> Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.