Kodia Tri Bolt (1C) OSK DT rim door lock with three bolts and 4 Brass Ultra Keys, for securing a door from its inside face. Three round chrome bolts throw from the side of a satin nickel-tone body, which has a brushed centre panel, an oval knob and a small thumb turn. A separate key cylinder with keys goes with the lock. The Tri Bolt line comes in 1C and 2C versions and in OSK and BSK (D/T) types, with finishes printed as Antique, Black and Rose Gold.