【14-PIECE SET】This diamond tile hole saw kit includes 14 essential pieces: 7 diamond core drill bits (1/4"*2, 5/16", 4/5", 1-3/8", 2", 3", 4", 5" ), 1 finger bit (4/5"), 1 beveling chamfer bit (2"), 1 SDS shank adapter, 1pc Hex shank adapter and 1 Diamond Saw Blade Cutting Disc Wheel with X Mesh (4.5"). Perfect for a wide range of drilling, milling, and chamfering tasks.Perfect for a wide range of drilling, milling, and chamfering tasks. 【APPLICATION】Dry drilling/milling/chamfering for porcelain tile, ceramic, granite, marble, stone, masonry, brick... Wet drilling/milling can prolong the service life. For extended tool life, wet drilling is recommended. Ideal for both DIY enthusiasts and professional contractors. 【FEATURES】This tiling installation kit is made of high quality diamond and steel by vacuum brazed diamond technology. Provide very high efficiency, drilling and milling faster, durable and sturdy.Mesh turbo rim with hybrid diamond segment provides fast high-quality clean cutting and minimal chipping. Reinforced steel core prevents flexing, wobbling, and vibration during cutting. 【ATTENTATION】Recommended RPM for Hole Saw Kit is 6000;The 100/125mm core drill bit's recommended RPM: 3000-6000RPM; Maximum RPM is 11000, Recommended RPM for Tile Blade is 8000, Maximum RPM is 13200. 【MACHINE】Tile Hole Saw Kit are Widely used in Angle Grinder, if you want used on hand drill, bench drill, you can use the adapter included in the bag. Tile Blade is Suitable for circular saw and angle grinder. Premium Diamond Tile Hole Saw Kit – Precision Cutting for Porcelain Ceramic Marble Brick Granite – Durable, Versatile, and Easy to Use for Flawless DIY & Professional Results