The Monster Jam 1:64 2-Pack Color Change Grave Digger vs Calavera Truck features Hot Wheels Monster Trucks in a multicolor design. This set includes two monster trucks, Grave Digger and Calavera, from the Hot Wheels Monster Jam Series 15. The trucks are part of the 2021 collection and are designed for boys and girls who enjoy playing with diecast toy vehicles. The trucks are 1:64 scale and are ideal for fans of the Monster Jam character family.