Versatile Use: Whether you're working on the fine details of crown molding, trimming, or other complicated woodworking projects, this protractor angle finder has the performance you need to get the job done right O Ring Design: The angle protractor is equipped with a reinforced O ring with a useful torque adjustment feature that allows for smooth 360° rotation Ease of Use: The angle finder locks into position quickly and reliably with the help of a wing screw, ensuring a stable angle without slippage, even when scribing or drilling Quality Aluminum Alloy: This miter saw protractor is constructed of lightweight aluminum alloy, which is rustproof and wear resistant, greatly prolonging its service life Clear and Easy to Read: This angle finder tool is equipped with a clear and easy to read precision engraved scale that allows you to directly read the exact angle, Manufacturer: Sutowe