1New double hole positioning ruler, 3 kinds of adjustable hole positions, convenient and fast, including 25mm, 40mm and 45mm wire box. Aluminum alloy material, wear ‑ resistant, surface black oxidation treatment, anti ‑ rust. Laser engraving, accurate scale, two measuring scale units, to meet different needs, practical. The fixed nut is connected closely, and the screw can fix the angle. It can measure and adjust the star in all aspects, so it is easy to use. Drilling is more accurate, easy to store and can be used multiple times. The guide saw or drill drills transparent holes in tile, glass, marble, fish tank, granite, ceramics, etc. Condition: 100% Brand New Item Type: Hole Locator Measurement Accuracy: mm Material: Aluminum alloy/plastic Product Use: Ceramic tile positioning, measurement of arbitrary angle irregular shape Size: As Pictures Show 3 x Ruler 4 x Set of Fixing Screw 2 x Wire Box 1 x Gradienter