Specifications: Maximum drilling diameter: F300mm Voltage: 220V, 50HZ Input power: 3200W No-load speed: 850r/min Weight: 18kg Water seal design: copper tube Material: metal alloy. Vertical Diamond Core Drill Wet/Dry Concrete Drilling Machine Max. Maximum drilling diameter: f300mm Voltage: 220V, 50HZ Input power: 3200W No-load speed: 850r/min Weight: 18kg Water seal design: copper tube Material: metal alloy. The gear mechanical clutch is built into the gear box. When the high-speed rotating drill is locked, the gear and the motor are mechanically separated in time to ensure that the motor also prevents accidental damage to the user and greatly improves the quality and safety of the product. The motor has strong load capacity, high hole expansion efficiency, wire guarantee service life, carbon brush load service life is up to 150 hours, and motor service life is high. The power cord of the plug-in board needs to be more than 2 square. France, Germany, spain, Italy. Feedback is very important to us. It is impossible to address issues if we do not know about them! Please keep the original box or packaging within 15days since item received. Your satisfaction is our ultimate goal. We work hard to earn your trust and future business. A If you receive a defective item, you may return it or ask for a discount. Due to time zones, our reply to your questions may not be immediately. If it’s non-workdays, please kindly be patient and wait till Monday.