100% ALUMINUM ALLOY MATERIAL---Our aluminum alloy multi angle measuring ruler is made from extremely strong and light aluminum alloy metal.Not like the old wood ruler or plastic ruler,which is easy to break after times of usage.This ruler is heavy duty quality and will not break. FUNCTION---This angle template tool cae ben used for carpentry, brick work, flooring, roofing, tiling etc. Create layouts in tiling, bricking, paving stone, lumbering, laminating and so on!this aluminum angle template tool is a must-have for any toolbox! PORTABLE---Our package includes one ruler+one bubble level+one black nylon portable bag. You can take this ruler anywhere with you. PERFECT GIFT---Perfect for builders, craftsmen, weekend warriors, and DIY-ers alike EASY TO US---ust place the angle template tool on where you need to work, slide the rulers into the shape you need, and turn left tighten the screws.Then you can adjust any desired angles as a reusable stencil for endless applications.