ISO, older Leupold 4.5x14x40 scope caps. Years ago I purchased a new Vari-x 3 scope and it came with scope covers that were basically flat rubber caps that fit in the objective and eye piece with 2 large blk rubber bands kind of like the rubber "bikini" style covers that we see everyday, but these were caps that fit right against both ends of the scope. By flicking the eye piece cap the whole cover springs off and out of the way. I just bought another scope and would like to find another set. Any help would be appreciated. GH