"The 280mm frame with a 4x90mm set up is the replacement for Maxxum skates and can be used on Twister skates as well. The 280 extruded aluminum frame provides torsional rigidity, an upgrade from 4x80, maneuverability and considered the ideal blend of control and speed by many. Hardware included: (8) racing axles"
Frames are sold in a set of 2