Wald 742 Training Wheels Kit Your Training Begins Now When your young rider is first learning how to ride, training wheels are a great place to start. The Wald 742 Training Wheels Kit comes with durable training wheels that provide security and confidence to any child's bike. The 5. 5" diameter plated steel wheels have rubber tread, and the brace arms fit chainstays up to 0. 75" diameter. This is designed to mount on most bikes with 16" to 26" wheel sizes. Features5. 5" diameter plated steel wheels with rubber tread Designed to mount on most bikes with 16" to 26" wheels Weight limit: 125 lbs | Wald 742 Training Wheels Kit Wald Training Wheel Kit 742 | Rubber