Black-lead pencil:
long, tapered tip for writing or drawing fine lines.
Colour pencil:
long, tapered tip for writing or drawing fine lines.
Small, additional tip to prevent the lead from breaking while the product is being delivered to the customer. (only used for artists´pencils)
Pastel pencil:
Short tapered point to prevent the very soft lead from breaking. On the other hand, it requires more frequent resharpening.