Compatible with 45cc 52cc 58cc chainsaw models for tension adjustment across a wide range of gas-powered saws construction long-term function under regular use in outdoor conditions engineered adjusting screw provides accurate chain tension control to maintain cutting efficiency Easy to install and replace, designed to fit standard chainsaw tensioner housing without modification Ideal for routine maintenance and repair, helping extend the life of your chainsaw chain and guide bar, Manufacturer: CQadsDyrx