Checking keyring sharpeners by the box
Keyring sharpeners are bought in quantity, so check a sample from each box rather than every piece:
- The carbide notch is intact and firmly fixed in the 7.8 cm black aluminium body.
- The chain links are fully closed and the ring opens and shuts cleanly.
- The black finish is even, without scratches from packing.
- A test stroke on a blade leaves a fine, even edge.
A small knife sharpener from Pakistan like this one takes seconds to check, then sells steadily from the counter for months.
