1. product packaging: 2xauxiliary wheel, 2xshoulder screw, 2xscrew cap, 2xwasher, 2xlock nut, 2xhandrail, 1xwrench.

2. Super high quality: Our bicycle auxiliary wheels are made of high quality metal, plastic and rubber materials.

3. Unique Design: We are most concerned about the safety of our customers. The exercise bike has a small stand which is more stable and can help young students to cycle until they feel the balance of the bike, so you don't have to worry about the safety of your children.

4. High-quality lightning wheels: non-slip, wear-resistant, stable, the support wheels for the support wheels are 3.0mm thick. This provides more security and stability for beginners. Black wheels are perfect for any colored bike.

5.Universal and adjustable: support wheels fit 12/14/16/18/20 inch single speed bike with a rearward-pointing horizontal fork end, but not suitable for people with semi-horizontal or vertical legs.

What's in the box
1 x Auxiliary Wheel,Universal Bike Stabilizer Bike Wheels