Features:  Crafted from CNC-machined Anodized Aluminum Alloy. Features easy-to-read precision engraved scales.  Internal O-ring mechanism swivels during operation and ensures smooth & precise read on inside/outside corners.  Two scales transfer your work angle directly to the miter saw for an accurate Miter cut, and Single cut.  Perfect for crown molding, trim work, plumbing, and a variety of other carpentry applications.  The 1/4-Inch thick aluminum alloy is stronger and won't bend like the plastic ones.    Specifications:  Material: Aluminum Alloy  Color: black  Size: (Approx) 30*6.5*1.4cm    Package Included:  1 PC x Protractor    Note:  1. Due to the light and screen difference, the item's color may be slightly different from the pictures.  2. Please allow 0.5-2 cm differences due to manual measurement.