Adjustable Diamond Cutter: Hole saw holder and hole saw drill guide, drill bit hole saw guide jig, stable hole saw guide jig, this diamond hole saw is adjustable, with a maximum opening length of 80 mm. It can accommodate all sizes of hole saws With Vacuum Base Suction Cup: Hole saw kit with hole saw guide, 4-80 mm tile hole locator, the hole saw drill bits Diamond tip, which have a suction base, are strong enough to hold the centering jig in place on a smooth surface. Wide Application: Hole saw guide jig detector, tile hole drilling locator, drill a hole in tile, glass, marble, aquarium, granite, ceramic. It has good wear resistance and durability, and can withstand the quality test of use. Sturdy and Durable: Tile hole drilling locator, stable hole saw guide jig, the hole saw guide is made of durable engineering-grade plastic, so it won't crack like fragile ones. Each hole is processed with smooth and precise surface treatment, and the top of the hole is thickened to achieve