1Clear control method, it is equipped with a humanized console, the switch is clear, and it is easy to operate. 2With 19 holes, it is easy to operate, just select the corresponding hole according to your needs. 3Nonslip foot pad, it can fix the body well, so that the polishing process will not run off and ensure safety. 4Threedimensional air outlet, it has multiple air outlets, which can protect the core body and prolong the service life. 5Multifunction, it can polish 3/3.5/4/4.5/5/5.5/6/7/7.5/8/8.5/9/9.5/10/10.5/11/11.5/12 ordinary twist drills. Item Type: Grinding MachineMaterial: PlasticVoltage: US 110-120eight: Approx. 1159g / 40.9ozRated Power: 95WRated Speed: 1350rpmApplicable Drill Diameter: 3mm-12mm / 0.1in-0.5inScope of Application: It is suitable for drill bit grinding and so on. (Only the rear face of the 130standard drill can be ground) 1 x Grinding Machine1 x Manual 1. Please pay attention during operation to reduce the grinding loss of the drill blade.2. Only the rear face of the 130 standard drill can be ground.