Widen your Q-factor to 57mm. - Long spindles are 5mm longer than standard. - The kit includes: 1 pair long spindles + refresh kit (Enduro cartridge bearings, igus ll-glide bearings, DSS double seal system: internal and external seals, hex alloy end caps, o-rings, nuts, sleeve bushings, & bearing removal tool). - Compatible with: Eggbeater, Candy, Mallet, 5050, Double shot, model years 2010-present - Weight: 112g per pair - Spindle material: forged SCM 435 chromoly steel - Q-factor: 57mm