[Illuminate Silver Marking]The silver round refills can lay out an illuminate sign on metal and oily and maintain its performance in high temperature of welding; Compared with soapstone, the markings of welder pencil is not easily to erase. [Mechanical Metal Marking Pencil]The mechanical welders pencil with built-in sharpener and pocket clip for easy carring and usage. You can press to get a proper advance, the rid of the traditional hand sharpening wooden pencil. [3-Claw Refill Holder]The 3 claw nib design of metal marker can hold the refill tightly and protect refills from breaking, and you can adjust the length of refill very quickly to get a fine point on deep area. [Widely Applicable]welders pencil can be widely applied to make illuminating marks for steel welding, architects designing, sheet metal and steel scribing, carving supplies, metal layout tool, Manufacturer: Jnchdghwa