【Standard M14 Connection】: Standard connection, just screw onto the hose, easy to connect to the angle grinder.Used for installing a socket in tiles.【Side Slots】: The side slots are designed to drive out the drill core.【Side Slots】: The side slots are designed to expel the core. 【Suitable machine】: It can be used with all common types of angle grinders with an M14 spindle.!!!wet the tiles before and during cutting and the cutting is perfect. 【Suitable for】: For hard and soft tiles, porcelain, ceramic, porcelain stoneware, marble and granite. Professional-Grade Diamonds: High-speed cutting creates friction and heat that can damage a hole saw.Our industrial-grade, temperature-resistant diamonds enable fast, precise cuts without breaking tiles, regardless of cutting speed. Our diamond drill bit uses high-quality artificial diamonds, which are sharp, thickened and durable.Fast drilling speed and round hole without gap.