Fishing hook keeper

Yet another copy of the fishing Hook Keeper by Fuji.
The length should be 1.7-2 cm.
You'll need to buy (or print, if you have 3D printer that prints rubber) the O-ring (1.5 mm thick and 15 mm diameter is used in the example) or use an elastic band instead.
Quite useful, but for the best performance, I advise buying the original!
Enjoy it!