The PKTool Soapstone Welding Marker Refillable offers an elegant solution for professionals and enthusiast home welders looking to make temporary marks on welds and metal surfaces. Its low water content and heat resistant properties make it a breakage-resistant and versatile tool for marking surfaces such as steel, stainless steel, aluminum and more. With its ability to be removed conveniently, the Soapstone Welding Marker Refillable is an economical and reliable choice for achieving the desired marking results. Perfect for temporarily making on welds & metal surfaces A must have for the professional or enthusastic home welds Will not contaminate welds Low water content increase breakage resistance Very heat resistant but easy to remove writes & marks surfaces such as steel stainless steel aluminum & more verstaile & economical solution for making surfaces when welding