Features 1、Hex Shank: The drill bit adopts hex shank, which is suitable for most hand drills, bench drills, the usage is easier and safer, will not slip and fall off 2、Good Heat Dissipation: The diamond hole drill bit has wax inside to absorb and dissipate heat, resulting in faster and cooler drilling performance 3、High Strength Body: The body of the drill bit is forged with high strength metal, which is not easy to deform and can easily open holes 4、Applicable Machine: The brazing drill bit set is suitable for common hand drills and angle grinders on the market 5、Application: This hex shank diamond drill bit set is suitable for porcelain, tile, ceramic, granite, marble, masonry, stone, etc. Specification Item Type: Diamond Drill Bits Material: Diamond Brazing Drill Bit Diameter: Approx.5mm/0.2in, 6mm/0.24in, 8mm/0.31in, 10mm/0.39in, 12mm/0.47in, 14mm/0.55in, 16mm/0.63in Brazing Drill Bit Working Depth: Approx.42mm/1.7in Shank Diameter: Approx.6.35mm/0.3in Sand Width: Approx.10mm/0.4in Brazing Drill Bit Total Length: Approx.65mm/2.6in, 65mm/2.6in, 65mm/2.6in, 80mm/3.1in, 80mm/3.1in, 80mm/3.1in, 80mm/3.1in Package List 1 x 5mm Hex Shank Diamond Drill Bit 1 x 6mm Hex Shank Diamond Drill Bit 1 x 8mm Hex Shank Diamond Drill Bit 1 x 10mm Hex Shank Diamond Drill Bit 1 x 12mm Hex Shank Diamond Drill Bit 1 x 14mm Hex Shank Diamond Drill Bit 1 x 16mm Hex Shank Diamond Drill Bit