This is replacement caps and protectors for multimeter probe cables, in my case I have a Uni-T UT133B Multimeter but I assume this is mostly a standard size for many brands.

The design comes with 3 types of caps

* Protection cap for the banana plug end of the cable (the one going into the multimeter)

* Tip protection cap, which only reveals the "pointy" end of the probe (just as the original ones).

* Fully closed cap which protect the whole tip.

The caps for the tips tries to mimic the behaviour of the original one which has a snap fit ring inside the cap so it will stay on the probes without any issues.