Lead refill Staedtler Mars micro carbon 250 0.5mm H

Staedtler Mars micro carbon 250 lead refill, H hardness, 0.5 mm diameter. This refill provides smooth, jet-black lines and high break resistance thanks to its flexible carbon-based composition. Manufactured using an ecological process without PVC or softening agents and composed of more than 90% natural raw materials. Compatible with all mechanical pencils and offers simple "12-at-once" refilling for many STAEDTLER models; each tube contains 12 leads and follows ISO colour coding.

Advantages

The H-grade 0.5 mm lead balances firmness and darkness for precise writing and detailed technical drawing. Flexible construction reduces breakage during normal use while preserving a consistent, smooth glide on paper and drawing card. The production method avoids PVC and plasticisers and uses predominantly natural raw materials, supporting improved material safety and environmental considerations. Tubes are compatible with easy refilling mechanisms for many Staedtler mechanical pencils.

Suitable for

• Precise technical drawing and drafting
• Everyday writing and note-taking
• Sketching and detail work on paper or drawing card
• Use in Staedtler and other standard 0.5 mm mechanical pencils

Key specifications

• Brand: Staedtler
• Model/MPN: 250 05-H
• EAN: 4007817213643
• Lead type: Carbon (Mars micro carbon)
• Hardness: H
• Diameter: 0.5 mm
• Quantity: 12 leads per tube
• Colour: Jet black
• ISO colour coding: Yes

How to use

Open the plastic tube and load leads into your 0.5 mm mechanical pencil following the pencil manufacturer’s loading procedure. For Staedtler pencils with the "12-a-go" refill system, insert the whole strip as instructed by the pencil model. Use light to moderate pressure when writing or drawing to minimise breakage; store the refill tube closed to protect leads from damage and contamination.

Recommendations

For longest life and best performance, combine these H 0.5 mm leads with a compatible Staedtler mechanical pencil, avoid excessive pressure or lateral force, and keep spare leads in their tube when not in use.