Include: 2 round soapstone holder with refill and 16 round soapstone refills. Soapstone holders are made of by high-quality material. All soapstone refills are #1 Select Natural Grade Soapstone. Mark white clear and removable markings. The soapstone holder can prevent soapstone breakage, allowing easy adjustment for more precise marking to yield more accurate welding. This soapstone pencil kit is perfect for marking. Widely used in welding, metal Fabrication and construction. Convenient and simple to use: our soapstone holder features a pen shape for easy carrying and storage, the textured tightening collar ensures a secure grip when making markings, also easy to apply even with the use of gloves Easy to replace: the soapstone refills are easy to be put into the holders, and the tightened end collar always hold the pen refill securely and safely, you can also use pliers to tighten it Quality material: soapstone and the holders are made only with High quality materials for good