Description: Made of 4mm aluminum alloy material, not easy to deform, anti-fall,durable; coated with black oxidation rust-proof and won’t scratch working surfaces. Laser calibration, high accuracy, clear reading. You can adjust the drilling position to mark tiles exactly, works great on carpentry, brick, tile, wood, glass, stone, laminate, construction & engineering projects. Easy to use. place the template tool ruler onto your work area, slide the rulers into the shape needed, and tighten the screws. saving you time and improving your work and productivity. A handy personal and professional device, perfect for carpentry, bricklayer, craftsmen and DIY-ers alike. Specification: Material: Aluminum Alloy+ABS Size Chart: Size: 246x32.5x4mm / 9.69x1.28x0.16inch Hole Opening Size: 25mm 40mm 45mm 55mm 75mm Package Includes: 1 Piece Twelve Folding Ruler 2 Piece Opening Hole Head 1 Piece Right Angle Ruler 1 Piece Level Ruler 15 Piece Screw 15 Piece Nut 15 Piece Gasket Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.