The Index features the same profile and urethane as our trusted Signal wheels, paired with a new tri spoke core design for increased weight savings. Finished with big bold urethane graphics, engraved logos and clean colorways, we are stoked to add this wheel to the North lineup. Size: 110mm x 24mm (Also available in 115mm x 30mm) Weight: 24mm | 237g / wheel Specs: 88a high rebound urethane 6061 aluminum cnc core North abec 9 bearings pre-installed Perfect core/urethane ratio for the best feel