Set contains parts for both German subs (Type VII, IX) in the Hasegawa kit and parts for Japanese submarines (I-1/6, I-15/46, I-16/58, I-68/370). Rails, prop guards. antennas, dive planes and more including props for IJN minisubs and Kaiten. Two sets necessary to complete both IJN subs in a box. Fits Hobby Boss U-boats and Skywave I-56/58 kit as well