General description The Mophorn 6 Pcs Diamond Hole Saw Set is designed for effortless cutting with a robust construction. This professional diamond drill bits set includes six drill bits with diameters of 20 mm, 25 mm, 40 mm, 45 mm, 50 mm, and 68 mm, along with two saw blades. The bits are compatible with M14 thread and provide quick, clean cuts without the need for water, ensuring a tidy workspace. Technical specifications Drill Bits Diameter: 20/25/40/45/50/68 mm (0.79/1/1.6/1.77/2/2.7 in) Blade Diameter: 125 mm (4.9 in) Blade Thickness: 1.4 mm (0.06 in) Mounting Thread: M14 Gross Weight: 1.7 kg (3.75 lb) Package Dimensions (LxWxH): 24 x 17 x 11 cm (9.4 x 6.7 x 4.3 in) Installation For optimal use, connect the diamond drill bits to an angle grinder. Begin by drilling a pilot hole to prevent the saw from straying from the desired location. Usage This set is ideal for drilling clean and accurate holes in hard and abrasive materials such as tile, granite, marble, stone, and porcelain.