Smooth & super-strong, Super Hi-Polymer Lead's proprietary formula delivers superior-quality marking with reduced smearing & excellent break resistance. Always producing crisp, clear lines with excellent consistency, this lead is ideal for all applicationsarithmetic & equations, drawing & drafting, template work & more. Universal compatibility also makes Super Hi-Polymer Lead Refills suitable for just about any mechanical pencil requiring the chosen diameter, & the HB lead refills are a direct equivalent to a #2 pencilguaranteed to scan accurately on tests & documents. Pencil Lead Format: Tube; Lead Diameter: 0.5 mm; Lead Degree (Hardness): HB; Lead Color: Black.