Electroplated Diamond Core Bit

Xi'an Tydrillbits Co.,Ltd is one of the most famous China electroplated diamond core bit manufacturers,Website:http://www.tydrillbits.com, welcome to wholesale cheap electroplated diamond core bit from our factory.Production Features                            Applicable for fast drilling concrete,refractory,bricks,asphalt,and various stones   Diamond core drill bits, also known as Diamond Hole Saws,have a hollow center and cut a circle in the material to create a hole. This results in a hole the size of the drill and a smaller "plug" or "core" which comes from the center. Diamond core drill bits are engineered to stand up to the rigors of the professional coring market. These tools deliver exceptional drilling performance in a wide range of concrete and masonry applications.  Dimension of core bit Double tube surfaceSize( surface exploration drillMatrix system(mm)Imperial system( in )Hole diameterCore diameterHole diameterCore diameterBQ6036.42.361.43NQ75.747.62.981.88HQ96.163.53.782.5PQ122.7854.833.34Triple tube surfaceNQ375.7452.981.78HQ396.161.13.782.41PQ3122.7834.833.27