General Tools 1/2 in. Solid-Brass Grommet Kit 71264 - The Home Depot
1-3/4" Solid Brass Grommet Cap - Metal Grommets - Mockett
grommets- rings and headboard liners - Schwere Messing-Halbkauschen und Ringe aus Vollmaterial - heavy duty brass grommets and casted brass rings - Robert Lindemann KG