Features Versatile Material Compatibility: Ideal for dry and wet drilling in porcelain, marble, granite, bricks, and similar materials, ensuring you can tackle various projects with ease Precision Reaming Capability: Designed to enlarge, shape, or fillet existing holes in hard surfaces, making it perfect for custom applications and detailed work Enhanced Durability: Crafted with vacuum brazing technology, these bits offer a longer service life, allowing for fast and smooth drilling while minimizing wear and tear Superior Construction: Made from high-quality No. 45 steel and vacuum brazed diamond technology, this kit ensures robust performance and exceptional efficiency for your drilling needs Convenient Portability: Featuring an M14 drill shank compatible with angle grinders, this set includes a converter head and storage box for easy installation and transport Features: 1、APPLICABLE MATERIALS: Coring bits are designed for dry or wet drilled tiles, granite, marble, bricks and all similar materials 2、FOR REAMING: Finger drill bits are used to enlarge, shape or fillet existing holes in porcelain, marble, granite and hard ceramics 3、STABLE AND : Vacuum brazing technology provides a longer service life, bring fast and smooth drilling 4、STURDY MATERIAL: The tile installation kit is made of excellent No. 45 steel with vacuum brazed diamond technology, which is robust and extremely efficient 5、PORTABLE AND CONVENIENT: The drill shank is M14, suitable for Angle grinders. Comes with a converter head and storage box for easy installation and carrying Specification: Item Type: Diamond Hole Saw Kit Material: No. 45 steel Drill Shank: M14 Punch Diameter: Approx. 6mm / 0.24in 8mm / 0.31in 10mm / 0.39in 16mm / 0.63in 20mm / 0.79in 25mm / 0.98in 32mm / 1.26in 50mm / 1.97in Applicable Machine: Angle grinder Package List: 9 x Drill Bit 1 x Converter Head 1 x Storage Box Package List 9 x Drill Bit 1 x Converter Head 1 x Storage Box