- A unique compound of graphite and carbon bound together with a special synthetic resin
- Thin but extremely strong lead that produces a smooth, dense black line
- 12 leads per tube
- 'F' lead for general use
- A unique compound of graphite and carbon bound together with a special synthetic resin
- Thin but extremely strong lead that produces a smooth, dense black line
- 12 leads per tube
- 'F' lead for general use