Renthal MX R-Works Lock-On Grips - Aramid (Tapered/Half Waffle)Renthal MX R Works Dual Grips Aramid (Comfort) feature the most advanced grip compound to date. Millions of randomly aligned Kevlar brand resin particles are suspended in the base material. As the grip is used, more of these particles are exposed, resisting wear whilst retaining a tacky feel. This is Renthal's ultimate grip compound. Features: ERGODIAMOND: Say goodbye to hand fatigue and jarring impacts as Renthal Comfort Pattern Grips feature