Item Type: Diamond Hole Saw <br>Material: Diamond <br>Colour: Black <br>Opening Aperture Specification: Approx. 6mm / 0.24in, 8mm / 0.31in, 10mm / 0.40in, 12mm / 0.47in, 15mm / 0.60in <br>Total Length: Approx. 80mm / 3.15in <br>Type: Hex Shank <br>Scope of Application: for marble, granite and other stone openings<br>1、Improve Work Efficiency: This is hole opener that can improve work efficiency, and can support customized drills <br>2、Wide Applications: This is a hole opener suitable for drilling granite, ceramic tiles, concrete, marble and other materials <br>3、Diamond Material: Hole opener is made of high quality diamond material, with fast drilling speed, saving time and effort <br>4、Fast Drilling Speed: This hole opener has a pointed head, fast drilling speed, and a large displacement cutting design <br>5、Long Service Life: This is a hole opener, with long service life, which is cutting smoothly, and without chipping5 x Hex Shank Diamond Drill Bit