Item Type: Marble Hole Saw_x000D_ Material: Diamonds_x000D_ Color: Black_x000D_ Total Length: Approx. 60mm / 2.4in_x000D_ Internal Thread: For M14_x000D_ Scope of Application: Marble, Granite and Other Stone Openings 1Fast Drilling Speed: Marble Hole Saw made of high quality diamonds material with fast drilling speed 2Large Displacement Cutting Design: Incisive cutter head, fast drilling speed, large displacement cutting design 3Save Time Effort: Save time and labor, improve work efficiency, and support customized drill bits 4Wide Range Applications: Suitable for drilling granite, ceramic tile, concrete, marble and other materials 5Long Life: Can use it for a long time, beacuse it has sharpness edge, and fast drilling speed which improve the service life1 x Marble Hole Saw