Front fork boot upper inner diameter: 1.6 inches (40 mm), lower inner diameter: 1.7 inches (42 mm), total length: 5.9 inches (150 mm), because it is made of rubber, it has a little elasticity. 2 pack Main compatible models: CS90 CB125S CB100 S90 CT90 CT110 CD125A CL125S Made in Thailand. *For safety please be sure to install it under a qualified person such as a motorcycle store mechanic, and make sure it is safe before driving. If there is any defects or abnormalities, please discontinue use immediately. Please check the condition regularly for safety.