quwei quick release rear wheel skewer bike wheel skewers for trainer bicycle cycling back rear wheel tire quwei <b>attention</b> <br> if you've been riding indoors for any length of time, you've undoubtedly toppled over or tipped your bike out of the trainer. skewer solved this dilemma by making a trainer skewer specifically designed for its trainers to ensure you're always upright. it fits most rear wheels and is shaped so that it seats securely in the rear wheel mount of the trainer.<br> <br> quick release cycle skewer for trainer road mtb bicycle universal fit.<br> <br> designed to secure perfectly into the clamps holding the cycle rear wheel to the turbo trainer.<br> <br> standard rear skewer size ,universal fitting for all rear cycle wheels with hollow axle.<br> <br> specially profiled to secure into trainer - cylindrical shape with flat ends.<br>