by betolung

These leads are individually color-coded (indicating its hardness) with a ring on the end that prevents them from falling off the leadholder. A practical feature I had not seen in decades that prevents accidental drops and lead breakage (when pressing the button absent-mindedly). The leads also fit and work in Staedtler Mars Technico leadholders. I tried fitting them in my Faber-Castell TK 9400 an...