The Heiniger 21/23 blade set is intended for clipping cattle with dirty coats. Its specified remaining coat length is 2–4 mm. The set pairs a 21-tooth bottom blade with a 23-tooth top blade, giving a clearly identified combination for the stated coat condition.

Use set reference 703-520 when replacing the complete pair. The separate component references are 703-300 for the bottom blade and 703-220 for the top blade. Check your clipper’s blade requirements before fitting, particularly when comparing sets that share one component but use a different partner.