Tile Milling Chamfer Bit 1/4" - 1", Diamond Finger Sander Countersink Drill Bit, to Enlarge Bevel Edges & Holes in Porcelain Ceramic Granite Tiles, fit 5/8-11 Thread Angle Grinders, 6-25mm - DKITDBIT, VVT-059

• 【Functions】: With our diamond finger countersink and milling bit, you can easily enlarge, shape, round and countersink existing holes to create perfect smooth holes in different sizes. 【Applicable materials】: This finger milling and countersink chamfer bit is suitable for shaping holes and edges on porcelain hard ceramic marble granite tiles and other natural stones. fit both dry and wet applications 【Easy to Operate】: Our 1/4" to 1" finger bit (6 to 25mm) work with standard Angle grinders with 5/8 inch-11 thread. you can milling tiles ceramic and concrete and enlarge holes and then bevel the hole to fit flush. 【Features】: Diamond mill countersink finger Bit with advanced diamond coating technology ensures high efficiency and long life, diameter 1/4 inch (4mm), countersink up to 1 inch work length 2inch (50mm), total length 65mm. 【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.