Diamond Coated Finger Bit, 1-3/8" Tile Milling Bit to Enlarge Grind Polish Shape Holes on Porcelain Ceramic Marble Granite Tile Countertop, with 5/8-11 Thread to 3/8" Hex Shank Adapter, Diameter 35mm - DKITDBIT, VVT-050

• 【Functions】: With our diamond finger bit, you can easily enlarge, shape, or round existing holes to create perfect smooth holes in different sizes. 【Features】: Diamond Core Drill Bit with advanced vacuum brazed coating ensures high efficiency and long life, diameter 1-3/8inch (35mm), work length 50mm, total length 65mm. 【Applicable materials】: This 1-3/8" finger bit is suitable for shaping holes on porcelain hard ceramic marble granite tiles and other natural stones. fit both dry and wet applications 【Easy to Operate】: Our 1-3/8" finger bit (35mm) work with standard grinders with 5/8 inch-11 thread. there is a 5/8-11 Thread to 3/8" Hex Shank adapter included, so it will also work with most electric drills. 【Recommendation】: For the best durability, we recommend only use this diamond finger bit to enlarge, shape, or round predrilled holes. and an RPM between 6000 to 11000 for optimal performance.