[ Miter Saw Protractor] The markings on miter saw protractor is laser-engraved, so NO need to worry about the markings rubbing or wearing off, protractor allows direct angle reading to the miter saw. Perfect for crown molding, trim work, and a variety of other carpentry ["O" DESIGN] The miter saw protractor is made of precision CNC machined aluminum alloy. The "O" shape design is adopted during operation to smooth and accurate readings of the inner/outer corners [Wide Use] It is suitable for crown molding, miter cuts, carpentry, plumbing, metalworking and more.Also, its small size and material makes it easy to carry,excellent construction partner Colour: black Material: aluminum alloy Package Contents: 2 x protractor Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.