It usually contains bud leaf, the mainstay of a blend. Broken pekoe is slightly larger than broken orange pekoe with somewhat less color. It is useful as a filler in a blend. Fannings is much smaller than broken pekoe Souchong. Its main virtues are quick brewing and good color.
Dust is the smallest grade, useful for a quick-brewing, strong cup of tea.
It is only used in blends of similar-size leaf, generally for catering purposes. These teas are not graded into leaf sizes. Hyson is a green tea with leaves rolled or twisted lengthwise. The early crop is young hyson. Gunpowder is a green tea with leaves rolled into small round pellets.