This soapstone pencil kit is perfect for marking steel, iron, and aluminum. Widely used in welding, metal Fabrication and construction. This soapstone holder is made of ABS material, featuring a 10cm ruler design and a handy spring pocket clip. The sturdy construction hold the pen refill securely and safely. The automatic soapstone holder allowing you to effortlessly adjust the length as needed,automatically dispenses a segment of soapstone with just one press. Its smooth operation ensures precise marking. Soapstone refills are #1 Select Natural Grade Soapstone. 125(L)x5.7(W)x4(T)millimeter. High temperature resistance and waterproof soapstone,mark white clear and removable markings. The soapstone holder kit is allowing you to easily down notes and markings as necessary.It is the ideal tool for marking brick, metal surfaces, forge work, blocks, asphalt and other similar materials., Weight: 0.29101018584 pounds, Manufacturer: Wesafrae