Brazed Diamond Drill Core Bits for Marble Tiles Washbasin Hole Opener M10 50-70 Features: * Wide application for drilling tile ceramic granite marble stone.... *Vacuum Brazed technology provide much longer working life than electroplated ones(Generally 3-5times) * Less Chipping, Minimizing breakage, less heat generation, Better finish quality * High diamond exposure rate provides a faster and more aggressive drilling. Specifications: Type: Brazing Hole Opener Triangular shank:40-60, 45-65,50-70(Suit for electric hand drill) M10 Thread: 40-60,45-65,50-70(Suit for 100 Type angle grinder) Total Length: 64/72mm Quantity:1pc Application: Excellent for making clean and accurate hole on marble, granite, glass and tile, etc. Package Included: 1pc Brazing Hole Opener 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. Wide application】Suitable for drilling tile ceramic, granite, marble, and stone. Can be used in various scenarios. Longer working life】Vacuum Brazed technology provides a much longer working life compared to electroplated ones (generally 3-5 times longer). Minimized chipping】Minimizes breakage, reduces heat generation, and improves finish quality for a better drilling experience. Faster and aggressive drilling】High diamond exposure rate enables faster and more aggressive drilling for efficient and effective results. Versatile compatibility】Comes with triangular shank (40-60, 45-65, 50-suitable for electric hand drills and M10 thread (40-60, 45-65, 50-70) suitable for 100 Type angle grinders. Offers compatibility with different tools.