Alumicutters are lightweight, but strong 2 in one tool that allows one to measure then cut along the smooth raised edge that protects fingers. When fingers are in the groove, the blade has barrier that prevents injury. There is also non slip backing made of neoprene to keep the Alumicutter in place. Measurement markings are created with photo anodizing process that prevents them from being rubbed off. Made of extruded aluminum, it also makes great inking edge. Silver 12 inch Alumicutter from the Alumicolor Company.