General description This 4-83mm Hole Saw Guide is an adjustable jig designed for precise drilling in various materials including tile, ceramic, glass, marble, and porcelain. Made from durable industrial-grade ABS plastic, this tool is built to last and can be used repeatedly over the years. Technical specifications Material: Industrial grade ABS plastic Color: Green Clamping range: 4-83mm Approximate dimensions (L x W): 280 x 200mm Includes: 1 adjustable hole locator Installation Mark the spots where holes need to be drilled. Insert the drill bit into the limit hole for positioning, then press the suction cup handle to secure the position. Tighten the positioning shaft to stabilize the setup. Drill precisely without any position offset. Usage Utilize the hole saw guide for drilling clear holes in tiles, glass, aquariums, marble, granite, and ceramics. It is recommended to use water or coolant while drilling to enhance performance and prolong the life of the hole saw. Other information