IJN 15.5cm/60 (6.1in) 3rd Year Type barrels (12pcs). Used in IJN Yamato, IJN Musashi, Oyodo, and other IJN warships. The set includes turned brass barrels. It is very simple to use in Your model, and makes it extremely realistic. Simply cut off the original plastic barrel and drill a hole in the remaining part and insert the metal barrel using Cyanoacrylate adhesives.