up for sale is a replacement tip for the STAEDTLER Mars Matic Technical Pens, 750 .50 (2), Made in Germany, BNIB.

Mars Matic are technical pens by STAESRLER with precise chrome plated drafting tubes. 

These pens are designed for use specifically for drafting paper and tracing paper.

• Made for maximum precision
• with hard chrome-plated drafting tube
• Steady in flow due to ink collection system
• For use on drafting paper, tracing paper and matt drafting film