The Andis 21686 is a size 1 snap-on attachment comb for use with a compatible clipper blade. It provides a removable guide over the cutting blade, allowing the user to work with an attachment comb when planning a haircut. This individual replacement is useful when restoring a missing size to an existing comb collection.

Andis identifies this accessory by item number 21686, so check that number when matching a replacement to your equipment. Confirm the blade and comb combination before fitting it: a matching comb size alone does not establish clipper compatibility. The manufacturer lists a 30-day warranty for this accessory.