Design: Pull Pin Spring Knob for stationary bikes knob for most bikes.
Material: Made from iron and ABS, it is sturdy and durable.
Feature: The knob comes with a built in spring handle, will not scratch your hands due to winding.
Easy to install: The knob is easy to use and quick to install, it will not take up too much time for you, and it is very convenient.
Application: Suitable for exercise bikes, strength equipment, fitness equipment, some weight benches, etc.