●Select the corresponding size kickstand according to your bike wheel size. ●Spring of kickstand is build-in,better safty and appearance. ●Made of high quality carbon steel, sturdy and very strong, waterproof and wear-resisting. ●Kickstand foot with non-slip rubber pads, against rust to prevent slipping on wet surfaces and to stand on. ●Just need a wrench to remove the original nut , install the kickstand and then screw the nut back.