Made of aluminum alloy, practical and wear-resistant, has a long service life. Can draw an arc with stainless steel rollers. With incisive and smooth tungsten steel blade. Easy to use and measure, high precision, more professional. Can hold pens of different sizes, suitable for wood, ceramic, iron, acrylic, etc. Product This is a plotter that can draw lines and arcs. It is also a multi-functional and practical carpentry tool. With it, you can save more effort and improve efficiency. Features: Material: Aluminum Alloy Color: silver Total length: 180mm / 7.1in Item Weight: 420g / 0.9lb Package size: 200 * 60 * 60mm / 7.9 * 2.3 * 2.3in Package weight: 450g / 1.0ln List of packages: 1 * Woodworking Linear Arc Processing Tool