Die cast is a term used in hobby industry referring to a model made with metal body. Diecast metal is made of zinc alloy. Die cast models are not necessarily 100% metal models.
1:18 scale model means that the length of the model is 1/18 of an actual vehicle. If you chop up a vehicle into 18 pieces, one piece length will be the same length as the 1:18 scale model. 1:18 Scale cars are about 10"-12" inches long, 1:64 Scale cars are about 3" inches long, 1:24 Scale cars are about 7"-8" inches long, 1:32 Scale cars are about 4"-5" inches long, 1:12 Scale cars are about 13"-15" inches long. Our descriptions on each item also show approximate dimensions.