characteristic: to meet the daily use requirements. These carbide tip cutter kits can quickly and accurately cut holes in materials, including stainless steel, mild steel, iron, copper, aluminum, , plastic and brass sheets. These hole cutters are suitable for impact drills and CNC drilling machines in drilling mode. Each kit includes a split bit to prevent the bit from moving and a very high quality and smooth hole, and a spring to facilitate the disassembly of the . Cemented carbide technology and optimized tooth structure have long service life. describe Name: three-blade hole opener set Material: alloy colour: Silver+gold Package Contents: 1 x 3-blade perforator set Only the above package content, other products are not included. Note: Light reflection 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.