Specification of the core drill rig: Motor: 110V/220V/240V, 50-60Hz Power input: 1500 W No-load Speed: 2100/950 RPM Max drilling Dia.: 90mm Features of the core drill rig: * Heavey duty blackened square column ensures maximum rigidity and durability * Precision rack and pinion gear system * Two-gear rotary speed is designed, through knob to adjust the speed of gear. * Top-gear is suitable for 20-52 small diameter drill bit, bottom-gear is suitable for 52-70 diameter drill bit. * Fitted with safety clutch, which can avoid damaging the frame when the twisting force is too high. * Designed to become handheld without bracket, witch Model No. Is CD-80HD. * CE certified
