1. Hard and WearResistantThe drill bit sharpener's shell material is ABS and the grinding wheel's material is diamond. These materials have good hardness, can effectively resist the wear and tear with the drill bit in the process of daily use, not easy to deform or break 2. NonSlip FeetThe bottom of this twist drill bit sharpener grinder is also designed with 4 nonslip feet, which can further stabilize the body, maintain its balance and effectively avoid shifting and slipping 3. Strong AdaptabilityThe adaptability of this portable home use drill bit sharpener machine is very strong, its multihole design is suitable for 312mm (1/8''15/32'') drill bits. In addition, it is easy to grind drills made of high speed steel, carbide, hardened steel and high carbon steel 4. Efficient Heat DissipationThe multiple air vents on the back of this drill bit sharpener for all bits can make it dissipate heat efficiently, avoiding damage to parts caused by excessive internal heat, thus further protecting your