With these caps you can convert impellers to another axle system your Cobalt.
9 mm: conversion of 15 x 100 mm thru-axle to 9 x 100 mm quick release
15 mm: Transitioning 9 x 100 mm quick release on 15x 100 mm thru-axle
Compatibility: Cobalt 2 Cobalt 3 (model 2011)
Delivery: 2x Crank Brothers Cobalt Adappterkappe (right and left)