1Excellent Aluminum Alloy Material: This pen center finder is made of excellent aluminum alloy material, which is sturdy and wear resistant, not easy to be damaged, and is oh that has a long lifespan. 2Oxidation Treatment: This line drawing scriber measuring ruler has been oxidized treated, which is colorfast, rust resistant and wear resistant. 3Multifunctional: This aluminum alloy pen center finder is multifunctional and designed to draw 45 degree lines on small sized materials such as rectangles, cubes, cylinders, rectangles, squares or rounded wood. 4Compact And Portable: This 45 degree angle marker centerfinder is small in size and light in weight, which is very convenient to carry around and use. 5Wide Application: This 45 degree angle scriber has a wide range of applications and can be used for handcrafting, furniture processing, carpentry and so on.