These are 5mm wheel hubs used in many of Tamiya's RC on-road cars

steel pivot balls

671" (1-43/64") Open

- Compatible with Fine Engraving Blades (Items 74135-38

These lightweight 14mm-diameter aluminum components stabilize polycarbonate racing wings used on R/C cars

Tamiya - Chasmosaurus Diorama Set Upgrade Parts Car and Truck Transmission Components These are 5mm wheel hubsThis assembly kit model recreates the herbivorous dinosaur Chasmosaurus, which lived in what is now North America during the Cretaceous period about 75 to 80 million years ago. Its shape and texture of its skin was reproduced based on the latest available research. Two different front left and rear right legs are included to enable different poses. The adult and young Chamosaurs may be conveniently displayed on the included diorama base and the set