This Wahl Attachment Comb Set includes combs for cutting lengths from 3 mm to 25 mm: No. 1 – 3 mm, No. 2 – 6 mm, No. 3 – 9 mm, No. 4 – 13 mm, No. 5 – 16 mm, No. 6 – 19 mm, No. 7 – 22 mm, and No. 8 – 25 mm. The colour-coded design allows for quick and easy identification of comb size and cutting length. This set is designed to fit most Wahl full-size clipper blades.