4mm-80mm Adjustable Cceramic Drill Bit/Glass/Marble Hole Saw Guide Suction Cup Base LocatorFeatures: Made of engineering grade plastic, quality, not easy to get cracked like the fragile ones of them. The adjustable plates' opening length is 4-80mm, large enough to put in all sizes of hole saws. More accurate drilling, easy to store, and can be used for many times. The suction base has good strength to keep the centering jig tight and well on a smooth surface. Guide saw hole or drill bits to drill clear holes for tile, glass, marble, fish tank, granite, ceramics, etc. Specification: Condition: Material: Engineering PlasticColor: Green Mounting Range: 4-80mm/0.2-3.1 inch Product Size: Approx. 15 * (18.5-25) cm / 5.9 * (7.3-9.8) inch Package Weight: Approx. 372g Package Included: 1 x Adjustable Hole Locator Note: 1. please allow 1-3mm error due to manual measurement. Please make sure you don't mind anything before placing a bid.2. The colors may have different display as difference, please understand.