Description:<br>Three groups of edge, each blade in cutting process is responsible only for 1 / 3 of the workload, <br>The burden of the characteristics of part of the cutting work, making the drill hole is not easy to produce the phenomenon of edge collapse. <br>Each edge is a part of the characteristics of the cutting work, making the hole is not easy to produce the phenomenon of collapse<br>With excellent performance, sharp edge, wearable.<br>The stainless steel plate, steel, casting, Aluminum Alloy, iron and other kinds of metal plate drill cutting removal<br>Specification:<br>Material: Alloy <br>Color: Silver <br>Length: 67mm Outside diameter <br>Size: 16mm, 18mm, 19mm, 22mm, 25mm, 30mm, 35mm, 42mm, 50mm, 53mm <br> for Chuck size: 9mm <br>Package Includes:<br>10 x Drill Bit Holes<br>Note:<br>This product is not easy to cut a relatively thin metal material, can be cutting within the 2-5mm,<br>stainless steel plate and the metal plate less than or equal to 15mm