26 - part complete kit ( 25 Polystyrene parts, 1 brass rod ) for the realization of a storage box and two stairs for the 2-axle Construction-, Material- and Crew trailer ( No.HK-15, No.HK-16 ) in the scale 1:24. This kit contains all necessary parts to build up the two stairs and the storage box ( for the bottom oft he Construction trailer ). In addition, the storage box is designed/dimensioned so that the two stairs can be stowed in it - as well as the original! Of course you find this, perhaps for this complete kit necessary and improvement, Accessories like photo etched grid or more Polystyrene profile and sheets and so on, also in my shop.