This Nitram charcoal set contains an assortment of lead sizes.

The set includes:
2 x 5mm (H) hard leads, which are great for fine lines and detail;

2 x 5mm (HB) medium leads, which are good for drawing and sketching;

2 x 5mm (B) soft leads, which are ideal for dark tones and shading

2 x 6mm (B+) extra soft leads, which are lovely for rich black tones.