Features : -Suitable for most drilling rigs in the market and a wider range of applications -High-quality screw hole interface is more convenient for loading and unloading drills -Precision steel pipematrix: thematrix has high hardness and is not easy to deform and has high wear resistance - edge: thick diamond is wear-resistant and and not easy to be damaged, and the ness is Precautions : 1. For rhinestones, water must be added during use. Fixed or hand-held drilling rigs are recommended. 2. To install the drill bit, first check whether the main shaft is swinging, whether the electrical and mechanical parts are normal, and ensure that the main shaft of the drill is tightened and kept concentric when the drill bit is installed. Specification : -Product name: diamond cobalt-containing water drill bit -Material:45 # steel -Color:sliver(as picture show) -Size:(optional) 160mm/200mm/230mm/300mm/400mm -Product Usage: 1. Drilling or coring of reinforced concrete and brick walls. 2. Air conditioning installation, pipes, road signs drilling. 3. Freeway and outdoor engineering drilling and core. -Quantity:1pcs Package Included: 1x water drill bit Note : 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. _x000D_ _x000D_