Features ★ APPLICABLE MATERIALS: Coring bits are designed for dry or wet drilled tiles, granite, marble, bricks and all similar materials ★ FOR REAMING: Finger drill bits are used to enlarge, shape or fillet existing holes in porcelain, marble, granite and hard ceramics ★ STABLE AND DURABLE: Vacuum brazing technology provides a longer service life, bring fast and smooth drilling ★ STURDY MATERIAL: The tile installation kit is made of excellent No. 45 steel with vacuum brazed diamond technology, which is robust and extremely efficient ★ 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 Bit1 x Converter Head1 x Storage Box Package List 9 x Drill Bit 1 x Converter Head 1 x Storage Box