Usage Tips:NOTE: Size 12" 14"16"18"20"Please choose according to the wheel size. SAFER WITH BUILT-IN SPRING: Built-in spring is more safe for your kids and it's made of carbon steel, sturdy and very strong, waterproof and wear-resisting. Durable bicycle single-side stand. EXCELLENT REPLACEMENT FOR TRAINING WHEEL: Suitable for children's bikes or small bikes or kids bikes. It makes you convenient to parking your child's bicycle. ANTI-SLIP FUNCTION: The bicycle kickstand foot with non-slip rubber pads to prevent slipping on wet surfaces and easy to stand on. EASY TO INSTALL: Please make sure you have removed all the nuts before put the kickstand in. It should be tighten directly to the bike frame without any nuts between them. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.