Description: Safer with Built-in Spring: Built-in spring is more safe for your kids and it's made of iron, sturdy and very strong, waterproof and wear-resisting. Durable bicycle single-side stand. Excellent Replacement for Training Wheel: Suitable for children's bikes/balance bike/small bikes/kids bikes.It makes you convenient to parking your child's bicycle. 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. Anti-slip function: The bicycle kickstand foot with non-slip rubber pads to prevent slipping on wet surfaces and easy to stand on. Note: Please choose according to the wheel size. Specifications: Product name: Bicycle Kickstand Color: Black Material: Iron Size: 12, 14, 16, 18, 20(As below) 12 Wheel Diameter Kickstand Length: About 19.5cm/ 7.7inch 14 Wheel Diameter Kickstand Length: About 21.5cm/ 8.5inch 16 Wheel Diameter Kickstand Length: About 23.5cm/ 9.25inch 18 Wheel Diameter Kickstand Length: About 25.5cm/ 10inch 20 Wheel Diameter Kickstand Length: About 27.5cm/ 10.8inch Kickstand Diameter: About 12mm/ 0.47inch Screw Hole Diameter: About 10mm/ 0.39inch Package Includes: 1Pc x Bicycle Kickstand Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 0.5-2 cm differences due to manual measurement. Welcome to our store , hope you have a pleasant shopping experience