TWO INSTALLATION OPTIONS AVAILABLE - Option I: Directly clamp the kickstand to your bike frame using the included clamping plate and rubber pads ensuring no risk of scratches! Option II: Directly mount the kickstand under the bottom plate on your bike frame (NOTE that a mounting plate on the bike is needed). UNIQUE PATENTED DESIGN - Our creatively designed, rubber-padded, scratch-free and non-slip bicycle kickstand stays more stable and solid on your bike when you opt for the clamp-on installation. Unique Design, PAT. 18/225, 696. DESIGNED FOR KIDS BIKES - This centre-mount kickstand fits kids' bike wheel sizes between 16" and 20". The height of the kickstand can be adjusted by tightening or loosening the bolt in the middle using the included Allen key.