Used Perko combination masthead and all-round light with stainless steel mount. Mount measures 37 1/4″ long with a 2 3/4″ diameter mounting base and a 3″ diameter light mounting base. The light appears to be a Perko 1196, 1183DP0CHR. Double bulb measuring 4″ tall. Nice condition that appears to have seen little if any use. Skippers Marine specializes in new old stock, recycled and those hard to find marine parts and accessories. Please check out my other Ebay store items. Don’t see what you are looking for? Feel free to send an email request. 4-7914CB