These appear to be are great lug nuts and a great price I sprayed a good wax on the outside during installation They fit my Rockwood Mini Lite camper trailer (The originals are junk)
Pros
PACKAGE INCLUDES MuHize Upgraded Bulge Acorn 1/2"-20 Black Closed End Nuts (20 pack). Supplied in box. (NOTE: Hand tighten nuts, DO NOT use power tools)