Uxcell 35mm Dry/Wet Sintered Diamond Core Drill Bits for Concrete Stone Gold Tone

Descriptions: Uxcell 35mm Dry/Wet Sintered Diamond Core Drill Bits Hole Saw for Concrete Stone Gold Tone Sintered diamond cutting edge contains diamond particles from inside to outside to ensure that the edge is always sharp. Suitable for drilling concrete masonry hard brick marble stone and other hard materials. 2. Can be dry or wet drilling. To prolong the using life it is recommended to be used with water for cooling and lubrication. The large clearance hole facilitates the entrance of cooling water and the escape of chips and other particles from drilling. With sharp cutting edge the core drill bits cut clean and fast holes and make drilling process much easier. Can be used on electric hand drills and bench drills. Notices: When cutting holes it needs to be positioned at an oblique angle of 45 degree and make a crescent-shaped trace on the material. Then cut holes vertically and need to be cooled with water. Package Included: 1 Pack x Diamond Core Drill Bits.