120x54mm Aluminium Alloy Cycling Single Speed Chain Tensioner MTB Bicycle Chain Replacement Prevent Chain Falling Off
Single speed converter chain tensioner, great for mountain terrain bicycle.
Floating pulley and spring adjust for perfect chain tension.
Light weight and easy to install.
Made of high grade aluminum alloy material, durable in use.
Material: aluminum alloy
Length: approx. 120mm
Width: approx. 54mm