HOUSING: Die-cast marine grade aluminum alloy. Fully-adjustable swivel arm with vibration-proof locking teeth. Fully rotatable shroud, double gasketed, die-cast marine grade alloy aluminum. ½" NPS male threads to screw onto accessory mounting stake or junction box, sold separately. Gasketing is silicone. Fasteners are 300 series stainless steel. Thermoset polyester powdercoat is electrostatically applied after a five-stage conversion cleaning process and bonded by heat fusion thermosetting. 50W maximum MR16 bi-pin lamp. Lower wattage lamps are acceptable. Covered MR16 are recommended to protect lamps inner capsule. Clear tempered glass affixed at 10° angle for natural cleaning. Bi-pin socket type (GU5.3) with 250° C high temperature teflon coated wire leads. Stainless steel retention clip affixed to socket to securely hold lamp in place. 12 Volt fixture is pre-wired with 3-ft pigtail of 18-2 AWG, 105° C, SPT-1W wire. Low voltage quick connector, catalog #LVC3 included for easy hook-up to the low voltage supply cable, not included. 12 Volt system requires remote transformer, not included. ETL listed to U.S. safety standards for wet locations. cETL listed to Canadian safety standards for wet locations. Manufactured to ISO 9001:2008 Standards.