Straightedge with delrin rollers for drafting tables * Straightedge mounted above board * Rollers make movement easy * Features Delrin rollers for working with mylar * Includes mounting hardware About the Mayline Rule II with Delrin Rollers This straightedge mounts on drafting tables to provide straight tracing or cutting. Use this edge for working with materials like mylar. Rollers let your work glide over the surface with ease. Mounting hardware is included. * Durable, black phenolic laminate base * Features Delrin rollers for working with Mylar * Transparent blade for see-through registration * Adds versatility to your drafting table or drafting boards * EZ Grip has a raised middle bar for easy movement * Mounting hardware included * Available in a variety of sizes