Made of engineering-grade plastic, durable and not easy to shatter The adjustable plate has an opening length of 4-80mm, enough to accommodate hole saws of various sizes More precise drilling, easy to store, can be used multiple times The suction base has good strength and can hold the centering clip well on smooth surfaces A pilot hole saw or drill drills holes in tile, glass, marble, fish tanks, granite, ceramics, and more Feature Tile hole saw is made of engineering grade plastic, durable in quality and not easy to crack Adjustable plate opening length from 40-80mm / 1.57"-3.15", enough to fit hole saws of all sizes The easy-to-store and reusable suction cups have good strength to keep the centering clips on smooth surfaces Vacuum suction cup with cooling hole suction cup for tile, glass, aquarium, marble, granite, ceramic Package Included: 1 adjustable hole locator Please allow 1-3mm error due to manual measurement Colors may vary by monitor Usage 1: Mark the position to be drilled 2: Put the drill bit into the frame hole, press the handle, lock the position 3: Tighten the positioning shaft wheel and fix the positioner Specification Material: Engineering plastic Color: Green Clamping Range: 4-80mm / 0.2-3.1" Product Size: Approx. 15*(18.5-25)cm / 5.9*(7.3-9.8)inch Package Weight: Approx. 372g