Avon Super Sport Air-SS Grips For Harley With Dual Cable Throttle The Air-SS incorporates an air cushion system that will reduce some of the unwanted vibrations. A consistent surface diameter with Avon's popular knurl texture. Features: Manufactured from Kraton, a USA engineered material Billet end caps and rings Measures 4.6 L x 1.5 O.d. Ergonomic, seamless rubber grip Made in USA