Original poster: "Pete Komen by way of Terry Fritz <twftesla-at-qwest-dot-net>" <pkomen-at-zianet-dot-com> A pair of large insulators that look just like someone was asking about is on eBay. http://cgi.ebay-dot-com/aw-cgi/eBayISAPI.dll?ViewItem&item=1271894613 4-1/2 inches to top of the insulator, 2-1/2 inches across the base, hollow. Four holes in base for mounting. With ribs. FWIW Pete Komen