Staedtler Mars Drafting Technical Mechanical Pencil, 0.3mm width, 92503BK Drafting/Technical Pencil, 0.3mm tip for writing & drawing ISO color Coding on barrel & push-button Adjustable hardness degree indicator & non slip rubber grip zone Chrome-plated metal clip & tip, aluminum hardness degree ring Rigid, cylindrical metal lead sleeve, ideal for use w/rulers & templates