1. U-drill shank drills multiple short chips, and can use the internal cooling system to safely remove chips, which is conducive to the continuity of work 1.Quick discharge of iron chips 2.Suitable SP insert. 3.Compared with the traditional troublesome bit, the effect is improved by 5-10 times 4.Direct drilling without central hole 5.Break the iron chips and do not stick to the drill ASIN B0BXNF94RT Model MGEVR 2525-3 Brand Name HUAZHICHUN Unit Count 1 Count Part Number MGEVR 2525-3 Manufacturer Xuzhou Huachichun CNC Technology Co., LTD Item Type Name drill Included Components 1 Surface Recommendation Iron