cd63l60s

advantage: 1). expedient drilling speed 2). optimum tootage 3). stable drilling 4). good quantity drilling holes advantage:1). expedient drilling speed2). optimum tootage3). stable drilling4). good quantity drilling holes More Specifications, for stone and concrete separatelyDiamond Drill bitOuter diameterWorking lengthSegment heightThreadinchmminchmminchmm 0.2461.97500.3910G1/2", 5/8"-110.3182. ...