Built with an effective, yet convenient design, the arms of the marker are precisely aligned with spring tension joints to guarantee accuracy and skill. Made with an anodized rust proof aluminum, for lasting protection, this lightweight product has heavy duty friction joints to maintain rigidity and precision. This Small Radius Marker provides up to 20" in radius and comes included with a soapstone crayon, giving users the option to accommodate flat or round soapstone and pencils. Established in 1933, Jackson Safety has built a century long reputation for delivering the most innovative safety solutions in the welding and personal protective equipment industries. When it comes to providing safety solutions with long-lasting value, durability and comfort, Jackson Safety has set the standard. Whether the need is for welding protection in a steel fabrication environment, head protection on a construction site, or hearing protection at an airport, Jackson Safety provides the widest range of safety choices to meet the needs of every job and every worker.