In the mid 1950?s Chevy® introduced their new overhead valve V-8 engine commonly referred to as the "Small-Block" Chevy®. These '55 -'57 equipped cars have become known as the "Tri-Chevys". The 1957 is the most popular of them all. The Bel Air® version was the top of the line with extra features and trim that set it apart. The rear tail fins were a styling trend that celebrated the jet age. - 2 kinds of decals, peel'n stick and waterslide - Solid metal axles - Molded in 2 colors - Molded in red, black and clear with chrome plated parts and soft black tires