Resistance knob for exercise bike - Gym accessory - 8 speeds - 55 cm - 8 positions - Adjustment knob

[Applications]: The exercise bike button is widely suitable for strength and fitness equipment, stationary bikes, etc. • [Features]: The button is small and portable; it won't scratch your hands when wrapped around the handle. • Material: Plastic and metal, durable and functional. • Easy to install: The button is easy to use and quick to install; it won't take up much of your time and is very convenient. • [Design]: Exercise bike resistance button for most bicycles and stationary bikes.