From the Manufacturer SARIS -
For a stable, worry-free ride with any rear wheel-mounted trainer. Unique 3-level design lets you select the level of difficulty. - Keeps your bike level with your trainer.
- Adds stability to your training ride.
- For use with any rear wheel-mounted trainer.
This riser accommodates multiple wheel sizes and widths and allows you to level your bike with the trainer or slightly raise the front of your bicycle to simulate a climb.
This item is new and unused; it was split from an accessory kit that included a mat and towel (9781T).