Jada Transformers Collection including Optimus Prime (Western Star 5700 XE), Bumblebee (2016 Chevy Camaro), CrossHairs (2016 Chevy Corvette Stingray), and Barricade.  I believe these diecast cars are 1:32 scale.  The boxes are ~ 6" long by 3" wide.  Comes as pictured, with the boxes still sealed but showing some wear and 2 of the boxes have Amazon labels covering the UPC.