The Skyway Tuff Wheel II Mag 20 inch Wheelset has been the mag wheel of choice of BMX riders since the beginning of BMX for the most part. For the most part these mags are just like there were in the 1980's but with a better sealed bearing hub. These are perfect to finish off your retro build, fix up that old BMX bike or to just look cool. These wheels are a pair (front and rear) and have 3/8" (10mm axles) and work with most 16t or larger freewheels. The freewheel is not included.