... core drill machine,core drill,engineering drill,drilling machine,professional for concrete and granite drilling,perfect Diamond core drill machine,core drill,engineering drill,drilling machine,professional for concrete and granite drilling ... .:Z1Z-CF03-90Max drilling diameter:90mmRated input voltage:110/220vRated input frequency:50/60HzRated input power:1500wNo-load speed:2200rpmPacking size:51 ...