Designed in colaboration with Joe Breeden and the AXESS UNLTD Team Offers more control with reduced hand fatigue for gravity riding by allowing the hand can push against the end of the bar and squeeze less A firm ergonomic rubber outboard flange also protects the pinky and hand from impacts Compatible with most carbon and aluminum mountian bike handlebars Requires a grip with an open end or a punched hole in the end of closed grips