... drill bit grinderEasy to operate, unskilled workers can learn to sharpen the drills quickly.Economical price, grinding fast and high accuracy.Diamond ... grinding wheel. Low maintenance, good grinding result.Motor is electronic and powerful, frequency stably, extra motor life.Specifications: Drill ... 1/4HP 180W R.P.M. of motor 5,300rpm Diamond grinding wheel CBN#230 Weight N / W: 9.5kgs, ...