Adjustable: You only need to change the different shapes by changing the tightness of the pencil clip and the nut to meet your needs. After adjustment, it can be fixed without slipping, which can ensure accuracy and improve efficiency High Quality: The base of this multifunctional scribing tool is made of high quality ABS + aluminum alloy, which is very durable, wear-resistant and more comfortable to hold when using. The deep hole pen body is made of plastic and the pen tip is made of metal, so it won't break or get damaged during the construction process Exquisite and easy to use: The scribing tool is equipped with a sturdy knob that gives you good control over the angle of use, allowing you to easily maintain a consistent scribing offset during use, keeping it parallel to the surface every time. Simply adjust the knob and you can change its pattern as needed to draw parallel lines and arcs as you see fit, making it very easy to operate 2 Boxes of Replaceable Refills: Plenty of Refills extend the life of the carpenter pencil, ensuring long-term uses. This set of scribing tools comes with two boxes of refillseach box contains 2 black refills + 2 red refills + 2 yellow refills Wide Applicatios: The multifunctional scribing tool is perfect for installing baseboards, flooring, tiling, decorative woodworking, laminating cabinets, under-stair storage, window seats, wall panels, custom woodworking installations and other remodeling and renovation projects