Lens Cap - Action Camera, 23mmX12mm lens ThiEYE T5E

To protect my new ThiEYE T5E actoin camera lens, I wanted a better fit than the others available.
Because I dont keep it in its waterproof case, mostly its attached directly to my RC model.
( You can see it used here: https://www.youtube.com/watch?v=IOBUDI1xuhg)