Up for your consideration, are these set of 4 vintage early 80s Kryptonic Kryptos road runners! These are the wheel of choice for speed and slalom skaters featuring a narrow track at 34mm and a diameter of 70 mm. As you can see from the photos, they are in very good condition, and great red color! They also feature a full set of NMB bearings. These wheels feature lightweight plastic cores and 8 mm bearing spacings. Highly regarded as some of the fastest wheels available. These wheels are perfect for setting up your era, correct complete slalom skateboard, set up or for use in rollerskate speed skating as well.