Avon Black Velvet Air Grips with Throttle Boss for 1985 and Newer Harley-Davidson models with Throttle Cables - AIR-96-BOSS Black Avon Velvet Air Cushioned Grips with Throttle Boss feature an incredibly soft, vibration damping rubber grip. Uses the same air cushion design as Avons original Air Cushioned grips. Throttle Boss end allows you to rest your hand on it to hold the throttle open. Grips have Black Billet End Caps and Trim Rings. Made in USA For all 1985 and Newer Harley-Davidson Models that use throttle cables. Will not work on 2008 and Newer Touring models with Throttle by Wire electric throttle.