Features: Made of aluminum alloy, sturdy and does not bend. Features precise, easy-to-read scales. The mechanism of O-ring pivots during operation and ensures smooth, accurate reading at inside/outside corners. Two scales transfer your working angle directly to the miter saws for precise miter cutting and simple cutting. > Use the inner scale reading to adjust miter saw settings for precise miter joint cutting. Use the outer scale for miter saw settings to adjust a single workpiece to the angle. Perfect for crown molding, miter cuts, carpentry, plumbing, metalworking and more. Features:< br/> Material: Aluminum Alloy Item Weight: 171g / 6 ounces Item size: 185 * 63 mm / 7.3 * 2.5 inches Package weight: 187 g / 6.6 ounces Package size: 188*70*20mm/7.4*2.8*0.9in Packing List: 1 * Protractor 1 * Manual 'use