1Fitment: The flywheel puller kit is a replacement for Polaris Rzr 900XP 2011?2014, please check the model and year of manufacturing before ordering. 2Function: Change the center threads from Rh to Lh threads, you can use it with impact tool tightly, instead of loosening the base and slinging it off. 3Practical: The thread in the center section was designed to be thick so that it could withstand greater impacts without spalling, and can fix itself firmly and will not loosen while using. 4Material: Made from sturdy, tough prime metal materials that it enhanced durability, reliability, stable and has high strength, not easy to break. 5Damage Proof: The tool is not easily broken, and it's hardness is softer than motorcycle parts to prevent damage to crankshafts and flywheels.