Each lead refill writes as far as a wooden pencil! B hardness for darker lines. Fits all 0.9 mm automatic pencils. FORAY Pencils part of a large selection of office supplies. FORAY(R) Lead Refills, 0.9 mm, HB Hardness, Tube Of 12 Leads, Pack Of 3 Tubes is one of many Mechanical Pencil Refills available through Office Depot. Made by FORAY.