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【Proudcts】7pcs in total,5pcs 1", 1 3/8", 2", 2 9/16", 4"(25/35/50/65/100mm) Diamond drill bits,1pc 1"(25mm) Diamond Finger Bit and 1pc 5/8-11 to SDS Adapter

【Wide range of applicable performance】 Provides a variety of specifications of drill bits to meet the needs of different materials, can be widely used in marble, granite, tile/ceramic, masonry, concrete and other materials cutting

【Finger Bit】Enlarge, shape and/or round bevel existing holes in Porcelain, Hard Ceramic, marble and granite

【Advanced Technology】Employ advanced vacuum brazing technology for precision manufacturing. This not only enhances product quality and extends its lifespan but also ensures high cost - effectiveness. The utilization of high - quality steel in conjunction with vacuum brazing technology guarantees that the drill is not only sharp but also highly durable, boasting a long service life

【Machine】Anger grinder. lf you want to use electric drill or other machines, you can use SDS or Hex Shank Adapter. Recommended speed 6000RPM, maximum speed 11000RPM.