The 8-piece kwb diamond hole saw set includes seven diamond-coated hole saws and a drilling template. The base body of the precise drill crowns is made from solid material and features high roundness accuracy. The cutting surface is equipped with high-quality industrial diamonds. The template has a suction cup and connections for water supply for cooling. The hole cutter is ideal for dowel holes and is suitable for use on the hardest tiles, porcelain stoneware, granite slabs, tiles, ceramics, natural stone slabs, and marble slabs. Note: Use only in a rotating manner with impact wrenches.