DescriptionDIY Supplies : WoodworkingOrigin : Mainland ChinaCertification : CEAdjustable hole saw drill guide jig fixture with suction base.Removable ball bearings, large enough to put in all sizes' hole saws.Guide hole saw or drill bit to drill clear holes on tile, glass, marble, countertop, granite, etc Drilling.Main FeaturesEXCELLENT QUALITY -our products are made of high quality engineering plastic, lasting quality and not easy to break.ADJUSTABLE PLATE SIZE -Adjustable plates' maximum opening length is 3-1/4", large enough to put in all sizes' hole saws.EASY TO STORE - more precise drilling, easy to store and can be used multiple times.STRONG STABILITY-the suction base has good resistance and keeps the centering clamp on a smooth surface.WIDELY APPLICATIONS -Drill hole saw guide clamp vacuum chuck base with water cooling holes widely use for tiles, glass, fish tanks, marble, granite, ceramics.SpecificationsMaterialsABSProduct Weight390GProduct Size(L x W x H)18.5x15cm/ 7.28x5.91inchNoteDue to manual measurements, please allow slight measurement deviations.Due to the different display and lighting effects, the actual color of the item may be slightly different from the color displayed in the picture.