Overview. Endless RB 100 Frames ride with a balanced rocker at 4x100 and flat at 3x110. Perfect for use on Rollerblade Twister Adapt Hyperskates, and other 165mm compatible skates. They include longitudinal mounting slots for dialing in front-back frame alignment. . The 3x125 can be pulled off on some models (FR Skates FR1, FR2, FR3, …