Diamond pillow surfacing is comfortable, but wears like the sole on a boot. No inside flange makes our Torker grip a great choice for aftermarket throttles—clean and lean. Technical Details: Injection-molded Thermoplastic Vulcanizate synthetic rubber is soft, durable and highly UV-resistant Flangeless design looks great on café racers, vintage Japanese and British customs and modern cruisers Thick one-piece molded end design for durability Safety wire grooves for added security Aftermarket throttle tube required to install Biltwell grips on stock H-D hand controls—see our Whiskey Throttle