White ceramic knobs (Central Crouch End N8)

3cm W x 2cm D. Suitable for drawers, cupboards etc. Not sure what size screw/bolt they need.
21 of them altogether (photo shows 19). 11 are in very good condition, 9 have small chips in the collar, and one has a slightly larger chip. Photo shows all but a couple of them, with the ones with small chips in front (sadly dropped on hard tiles last week!) If the ones with a chip are rotated so it's below or above depending on the angle they're viewed from, it's likely to be unnoticeable.