This multi-function carpentry marking ruler is made of premium metal material, which can withstand use. This Slide Ruler is designed with T-shaped, slide block design, and this ruler is precision and a professional and practical measuring ruler for your woodworking or other working, very practical and convenient. Features - ColorBlack -Material:Metal - Size: 23.00X5.00X1.50cm/9.04X1.97X0.59in - Manufactured with premium metal material, durable and serviceable for a long term to use. - Useful for a variety of carpentry, which can be widely applied in of woodworking and construction - Strict quality inspection system ensures that you get high-grade and practical Slide Ruler - Features the simple structure, and this Slide Ruler provides convenience and easiness to operate - You can buy the professional and practical Woodworking Slide Ruler at an Package list: 4 x Slide Ruler