Tb/12 Worther (Woerther) 1.18 mm Lead Graphite Black HB Includes 12 leads Works with Worther (Woerther) Slight pencils and any pencil taking 1.15, 1.18 or 1.2 mm thick leads 1.18 mm (also listed as 1.15 mm or 1.2 mm) Approximately 1-3/16" length (30 mm) Made in Germany