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- Resists breaking and never needs sharpening
- 0.5mm, fine lines
- 3B is a soft lead that produces a dark line density
- Easy to read and smooth writing feel
- Fits all 0.5mm mechanical pencils
- Box of 12 tubes - 12 pieces of lead per tube
Warranty: Each Pentel product is warranted for life against failure due to defect in materials and workmanship. For warranty service, return product for free repair and replacement to: Pentel of America, Ltd., 4000 E. Airport Drive, Suite C, Ontario, CA 91761, U.S.A., Attn: Quality Assurance Department
Details: For paper surfaces, formulated with polymer resin bonded to carbon and graphite particles that never need sharpening. These leads break less, last longer, write smoother, and produce dense black lines that resist smearing and fading. Use 0.3mm extra-fine lead for small details, 0.5mm fine lead for accounting and general writing, 0.7mm medium lead for students, and 0.9mm thick lead for drawing. Packaged 12 leads/tube.