... .Specifications: Drill size Dia.2 ~ Dia.13mm Point angle90° ~ 145° Power supply Single phase AC 110V AC 220V Motor 1/4HP 180W R.P ... .M. of motor 5,300rpm Diamond grinding wheel ... x W x H: 35 x20x 22cm Standard accessoriesCollect: Dia.2.5,3, 4, 5, 6, 7, 8, 9, 10, 11 ...