12 ct. 0.7 mm Ceramics High-Quality Mechanical Pencil Leads (3/Pack). Minimal breakage. Available in 0.5mm, 0.7mm and 0.9mm. Fits all 0.7mm automatic pencil. 0.7mm medium line is ideal for home, office, school, and general writing. Produces a smooth, crisp line with dark imprint for easy reading. You will never loose the tube's cap with this advance click lead refill dispenser.