Perko 1444DP5ALU LED White All-Round Light, 2nm, 42" pole length. Featuring a design that has a self contained LED module with all-round visibility for up to 2 nautical miles. With each package including locking and large threaded collars, these will fit all Perko 0 degrees and 5 degrees plug-in mounting bases. Meets specifications for: ABYC C-5, EN/ISO 19009:2015, ABYC A-16, 1972 COLREGS, RCD 2013/53/EU, and USCG 33 CRF - 2nm.For use on power driven vessels under 20m (65.5ft)