【SIZE】11 pcs in total: 2pcs 1/4"(6mm),5/16"(8mm),1"(25mm),1-3/8"(35mm),2"(50mm),2-1/2"(65mm) diamond tile core drill bits; 1pc 3/8"(10mm) finger bit; 1pc 2"(50mm) beveling chamfer bit ;1pc SDS shank adapter; 1pc 4.5"(115mm) Hexagonal Double Sided Sharpening Saw Blade 5/8-11 with Flange 【APPLICATION】Dry drilling/milling/chamfering for porcelain tile, granite, marble, stone, masonry, brick... Wet drilling/milling can prolong the service life. 【FEATURES】The use of vacuum brazing technology to provide a longer working life, the use of high-quality base steel and diamond, combined with the scientific ratio to create a steady increase in efficiency. 【ATTENTION】Widely used in Angle Grinder, do not use the impact mode when switching to a machine with an impact mode. Recommended RPM is 6000; Maximum RPM is 11000. 【USER TIPS】Use the suction cup locator to accurately position the drill or hold the drill at a 46-degree angle and drill in a circular motion until the drill begins to penetrate the material, then work the drill vertically.