HkB 600 were electric teak wagons formerly used on the Oslo Metro of Oslo, Norway. 12 double-car multiple units were built by Skabo Jernbanevognfabrikk and AEG from 1951 to 1956. Each train was long, and could carry 40 standing and 120 seated passengers. Maximum speed was . The wagons were taken out of use in 1995, and replaced with OS T2000 wagons.