Lead Refill Rotring Polymer Leads HB 0.35 mm S0312410

Rotring Polymer Leads HB 0.35 mm (S0312410) are high-polymer mechanical pencil refills with HB hardness and a 0.35 mm diameter. Designed for precise writing and detailed drawing, these leads combine smooth stroke quality with enhanced durability to reduce breakage and provide consistent line performance for everyday use by students, designers and technical illustrators.

Advantages

These 0.35 mm polymer leads offer strong break resistance and even wear, ensuring stable line width and reliable HB tone. Their formulation delivers smooth graphite flow for accurate lines and reduced smudging compared with softer leads. The refills are compatible with mechanical pencils that accept 0.35 mm leads and come from the Rotring S0312410 series for consistent quality.

Suitable for

• Technical drawing and drafting
• Detailed sketching and illustration
• Everyday note-taking and writing
• Student assignments and exam work

Key specifications

• Brand: rotring
• Model / MPN: S0312410
• Diameter: 0.35 mm
• Hardness: HB
• Type: high-polymer mechanical pencil lead
• EAN: 4006856505337

How to use

Load the 0.35 mm lead into a compatible mechanical pencil according to the pencil manufacturer's instructions. Advance the lead incrementally while writing or drawing to maintain a consistent line and avoid excessive protrusion that can lead to breakage. Replace leads as needed; store refills in their container to protect them from moisture and mechanical damage.

Recommendations

For best results, use these Rotring 0.35 mm HB polymer leads in pencils specified for 0.35 mm refills and apply moderate pressure while drawing to balance line darkness and lead longevity.