The Endless 90 Mercury inline skating frame is a premium multi-setup frame designed specifically for the Seba/FR Skates FR series of freeride skates. Endless 90 Mercury Frame Introducing the Endless 90 Mercury Frame. Become one with your surroundings with the Limited Edition Endless 90 Mercury Frame. This frame is a premium multi-setup frame designed specifically for the Seba/FR Skates FR series of freeride skates and other 165 mm compatible skates. It features a very dynamic mirror finish that will give your setup the illusion of invisibility. NOTE: This frame requires a 165 raised heel boot. It IS NOT compatible with UFS or Powerslide Trinity boots. Features Endless 90 Mercury Frame The 90 Mercury features: Limited Edition mirror finish—New 2022 Multiple setups: 4 x 90, 3 x 110 Balanced Rocker for 4-wheel setups Flat configuration for 3x100 setup (bullet profile wheels only recommended) Recommended for all skill levels Recommended for boot sizes 40 (260 mm foot length) and below Mounting: 150, 165, 180 mm Note: on Adapt skates our frames are not optimally centered Wheelbase: 276 mm Brake compatibility: 4x90: Powerslide Urban Brake Size M (908058/2)—may require modification to fit 3x110: Powerslide Urban Brake Size L (908058/3), FR Skates 3W Brake (FRBRK-3W) One frame set includes 2 frames and 8 axles CNC-machined from 6061-T6 aluminum Weight = 292 grams, without spacers and axles Note: The mirror finish on this frame can reveal fingerprints, tiny scratches, marks, and nicks. During normal handling and skating, the frame may get scratched. Wiping dust and debris off of the frame can also put micro-scratches in the finish.