Accessories:Wheelie-1pcsStainless Steel Round Head Screw 4x12-2pcsStainless Steel Round Head Screw 3*12-2pcsOriginal Name / Part No:LOS241052Part location:Rear wheelie barDoes this product replace a specific part or function?yesProduct major function & usage:Carry out performance of the wheelie, adjustable angleIs this part adjustable? If yes ¡¦ how and why/purpose?-How: Stabilize the wheelie on different positioning holes on the mount.Purpose: Adjust the angle of the wheelie to suit different drive mode.Major advantages of upgrading to this product:1. Made with aluminum 6061 T6 for better strength and greater durability.2. The two-wheels design is more stable, multiple positioning holes allows the angle to be adjusted freely. Select higher angle is better for flipping and lower angle is more stable.3. Using the original positioning hole to install that is easy.4. The wheelie wheels are hand-made with Delrin with bearings installed to ensure smooth action. Wheel pattern is designed for better gripping.