Material: This hole saw guide is made of durable industrial grade ABS plastic and not easy to break, tile hole locator can be used for years. Adjustable plate size: the plate has an adjustable opening length from 4-83mm, large enough to fit blades with all sizes of hole saws, 4 removable bearings can be repositioned to the 9 bearing holes to suit your needs. p> Double stability: two vacuum suction bases provide better resistance than a suction base and keep the centering clamp on a smooth surface. Easy to use and store : This hole saw guide provides more precise drilling, easy to store and can be used multiple times. Wide applications: Hole saw guide with water cooling holes widely used for drilling holes clear holes on tile, glass, aquariums, marble, granite, ceramic. Product Description Features: 1. Material: This hole saw guide is made of durable industrial grade ABS plastic that is hard to break. A tile hole locator can be used for years. 2. Adjustable plate size: the plate has an