Renthal MX R-Works Lock-On - Ultratacky (Half Waffle)Renthal MX R Works Dual Grips Ultratacky (Comfort) are made using our Ultratacky material. The unique properties of the Ultratacky compound provide a stronger bond to the handlebar, meaning you are able to control the bike with less physical input. The sticky surface lasts the lifetime of the grip. If it loses stickiness, simply wash with clean water and air dry to reactivate. Features: ERGODIAMOND: Say goodbye to hand fatigue and jarring impacts as