This is a set of two Jaco Prism 1/12 Mounted Foam Front Tires, in Purple compound. JACO uses only the highest quality foam sheets from around the world to produce their tires and they always incorporate the "freshest" rubber in their tires to ensure quality & performance. JACO does not buy "donuts" from other manufacturers. Since JACO laminates, cuts, trues and grades the foam in house, they have total control over the production process. The Prism front wheel features a larger race legal diameter and uses flanged bearings for higher corner speed. The best part is that less rubber on the wheel means lower retail price to consumers.
JACO is also involved in other non-R/C related manufacturing. This, unlike other tire manufacturers, gives them an incredible advantage with making sure their batches of foam are consistent and true. Anything that doesn't meet their strict grading system is used in other manufacturing projects. All JACO tires are produced on state of the art computerized machines. These same machines cut custom, high tolerance products used by the US Military and the Auto industry.