This anchor light mast has two main features. First it will put your anchor light, one meter above your running lights if you have them mounted on the t-top. Second of all the mast will get your GPS antenna above your radar. This will keep the radar from interrupting the GPS signal. The mast is made from 2 3/8 diameter aluminum. All the spar are tapered and the finish is powder coated either white or black. Its bottom mounting flange is 4” x 6 1/4” x 3/8” thick and uses four fasteners. Three 1”-14 threaded antenna bosses are included for GPS, VHF, etc. On top is a 3 1/2 around light. USCG 3 nautical mile approved light.