3 brass brake olives for Shimano/Formula/Avid/Magura brakes.
These fit 5 mm diameter brake hoses - which is most of them (obviously not braided hoses).
I have used these successfully on with the above manufacturer's brakes.
Note that these olives are slightly shorter than Formula and Avid but I have not had any problems doing up the hollow bolt.
You need to use the appropriate insert (these can be reused if you are careful removing them from the hose).
FYI - cheapest I have found on the web is £ 1.49 for ONE olive.
Postage is included