Features: 1Manufacturing Materials: Prime aluminum alloy material forged straightedge body aluminum alloy corner guide head does not rust durable. 2Accurate Scale: This woodworking protractor is a high accuracy engraving scale this aluminum alloy protractor wear resistant does not fade. 3Safety Edge: The edges and corners of this protractor or measuring tape have been carefully polished and will not damage the hand. 4Abrasion Resistance: The measuring ruler that is made of stainless steel has gone through chrome plating treatment to enhance its wear resistance. 5Flexible Design: The rotatable and straight design of this rotary angle finder makes the ruler more flexible when you want to use. Specification: Item Type: Woodworking ProtractorWeight: 96g / 3.39ozProduct Size: Approx. 18x9x2.2cm / 7.1x3.5x0.9inProduct Material: Aluminum AlloyUse: Angle ruler Package List: 1 xProtractor