Funn zippa dh chain guide zippa is designed for single chainring with its easy install features features no more chain slap lightweight strong reliable and affordable price funn presents you the new world class chain guide zippa am zippa dh the ultimate protection brings the joy and fun to all the riders full cnc alloy bakplate with chainring size indicator nylon fiber drivetrain protection sliderarmature alloy idler cr mo bolts single chainring 32t38t suitable specifications