General description Discover the efficiency of the Mophorn 5-Piece Diamond Hole Saw Set, designed for professional use. This set includes drill bits in sizes 25 mm, 40 mm, 45 mm, 50 mm, and 68 mm (1, 1.6, 1.8, 2, and 2.7 inches) with M14 threads. It ensures fast, precise cuts with minimal mess, eliminating the need for water. Technical specifications Drill Bits Diameter: 25/40/45/50/68 mm / 1/1.6/1.8/2/2.7 in Carborundum Height: 15 mm / 0.59 in Total Length of Each Drilling Bit: 60 mm / 2.3 in Mounting Thread: M14 Gross Weight: 1.36 kg / 3 lbs Package Dimensions (L x W x H): 20 x 17 x 11 cm / 7.9 x 6.7 x 4.3 in Installation To use these diamond drill bits, attach them to an angle grinder. Begin with a pilot hole to guide the bit and ensure accurate placement. Usage These bits are ideal for creating clean and accurate holes in tough materials such as tiles, granite, marble, stone, and porcelain, meeting a variety of drilling needs. Other information Safety Reminder: Use gloves and a