Design: Elliptical machine bolts for stationary bikes knob for most bikes.Material: Made of steel, it is sturdy and durable.Feature: Home gym exercise bike for bolt fan car screws fitness equipment accessories.Easy to install: The for bolt is easy to use and quick to install, it will not take up too much time for you, and it is very convenient.Applications: The fitness bike bolts is widely suitable for strength and fitness equipment, exercise bikes, etc.Specification:Material: SteelSize Chart:Length 12cm/4.72 inchPackage Includes:1 for BoltOR?2 BoltsNote:Please allow slightly errors due to manual measurement and different monitors. Specifications: Material: Steel Size: Length 12cm/4.72 inch Note: Please allow slightly errors due to manual measurement and different monitors. Package included: 1 BoltOR?2 Bolts