The center is ribbed for maximum gripping and the ends are flared to prevent your hand from slipping off the bar end. Left Grip is 1″ I.D. and the right grip measures 1 1/8″ I.D. to fit your throttle assembly. Throttle sleeves are also available at their website. Licks “Jellies” come in four classic colors including: red, charcoal, silver and blue. If you have been scouring the web for a classic retro metal flake colored grip, your search is over. Jellies sell for just $24.95 and can be ordered by calling Licks direct at 413-663-9050 or visit them on the Web at www.lickscycles.com. Dealer inquiries invited.