1-mile visibility for sail or powerboats under 12 meters (39.4'). Meets NMMA Certification procedure. 12V DC - 8 CP lamp included. Predrilled with two countersunk holes to accommodate #4 screws. Housing is chrome plated brass with black plastic base. Size 2-3/8" (6.03cm) O.D. base x 7/8" (2.22cm) vertical height.
