This item is a cap for the release handle of a Home Depot Everbilt 610964 Gate Latch - Model 18591 on their website. It makes the release a little more finger friendly if you don't plan on adding a pull string to the other side of the gate.

Printed with PETG @ 25% infill, but could probably be less.

Picture shows it in white which makes it easier to see at night. Black would certainly blend in better.

There is an internal notch to retain it on the lever, so it's a little tight going on. It should snap on solidly and not wobble around on lever.

While it was made for the "self adjusting" gate latch, it also looks like it should work on the fixed latch - Model 15642.