• Better than a stack of books, use the Trainer Block to keep your ride comfortable and stable.
• Use this nifty device to keep your ride comfortable. When placed under your front wheel, this block raises the front of the bike by approximately 2.75 (70mm) to give you a more level and stable platform for your workout.
• Raises your front wheel
• Fits 26" / 27.5" / 29" / 700c tires