A pocket edge deburrer and a set of three rotary brushes.
Where their listings pull ahead
The brush set publishes a diameter for each brush — nylon 65 mm, horsehair 65 mm, copper 75 mm — with a stainless click mechanism to swap them. Diameter decides how fast a brush clears a base and whether it fits a guard, and it is rarely printed.
The deburrer is a pocket tool at 90° and 88°, sold for taking a burr off on the piste, which is the job a bench guide is too slow for. At its price it is the cheapest thing on its shelf by a distance.
The live figure beside a product went and asked the shop for it the moment this page opened; any amount written into the text has not moved since the sentence was drafted, and it is the first of the two that counts.