Rugged stamped Stainless Steel cover. The round footprint is only 2-3/8" diameter. When closed the profile is 3/8" high. Wire leads are tinned and contacts are nickel plated. 2-pin Bases fit the following pole lights: Frosted globe 5110 series with locking collar pole, Anti-glare 5320, 5330, & 5340 series, Pulsar bi-color poles 5092. 3-pin base fits 5095 bi-color pole light.