[4 Hole Sizes] The stainless steel tile punch has 4 different hole sizes, 25mm, 40mm, 45mm and 55mm semi-circular holes, porous measurement and positioning, more accurate punching. [High-quality Material] High-quality stainless steel material, high hardness, not easy to rust and corrosion, long service life, strong and wear-resistant [Flexible and Adjustable] The stainless steel ceramic goniometer is equipped with an adjustable nut. Slide the nut within the range of the movable slot to freely adjust the measuring angle of the punching ruler, 360° free adjustment, and quickly open the hole. [Accurate Scale] The scale of the punching ruler is laser engraved, the scale is accurate, just adjust the locator to find the position where the hole needs to be opened, tighten the screw, fix the position and mark, and then make the hole, easy to use [Scope of Application] The multifunctional ceramic tile drilling tool has accurate measurement and precise positioning. It is suitable for reserved switch positions, reserved water hole positions, home repair and decoration construction teams, etc., and can be used for precise drilling positioning in ceramic, marble, wood, and plastic. Product Information: Material: Stainless Steel Size: 15.7*11.8*3.1in/40.0*30.0*7.8cm Hole Diameter: 25mm/40mm/45mm Semicircular Hole Diameter: 55mm Weight: 320g Package Contents: Tile Goniometer*1 Usage Steps: 1. Measure the opening position; 2. Make punches with a marker; 3. Use with the drill locator and drill bit, and make holes according to the mark (the drill locator and drill bit need to be purchased by yourself); 4. The punching is complete.