Mina HB Rotring Polymer Mine 0,7 mm S0312690

Rotring Polymer Leads 0.7 HB are high-polymer refill leads designed for consistent, precise writing and drawing. With a 0.7 mm thickness and HB hardness, these leads offer a smooth line and improved durability compared to traditional graphite, reducing breakage and providing reliable performance in mechanical pencils.

Advantages

The polymer composition increases strength and reduces crumbling, delivering uniform lines and fewer interruptions during use. Their 0.7 mm diameter balances control and visibility for both technical sketches and everyday writing. Compatible with Rotring mechanical pencils, these leads help maintain steady performance over extended use.

Suitable for

• Technical drawing and drafting
• Sketching and illustration
• General note-taking and writing
• School and study use

Key specifications

• Brand: rotring
• Model / MPN: S0312690
• Thickness: 0.7 mm
• Hardness: HB
• Material: high-polymer lead
• EAN: 4006856505733
• Category: Pencils / mechanical pencil leads

How to use

Open the lead container and insert a lead into the chamber of a compatible 0.7 mm mechanical pencil according to the pencil manufacturer's instructions. Advance the lead by clicking the pencil mechanism as needed. Replace leads when they are fully used or when performance declines; store remaining leads in the original container to prevent damage.

Recommendations

For best results, use these 0.7 mm HB polymer leads in mechanical pencils rated for 0.7 mm leads, and avoid applying excessive lateral pressure to minimize breakage. Store leads in a dry place and handle individual leads gently when loading.