Grippler Grips are made with Race Face's own proprietary rubber compound that feels great and matches the name with or without gloves. The directional ramped grip profile under the fingers helps to eliminate slippage no matter how sloppy the conditions. The 137mm width is ideal for most bar set-ups and hand positions, while the Race Face Lock-On system works great with clean set-up. We recommend the endcap be fully inserted flush with the flange for best retention. Durable, with unfailing grip, the Grippler Lock-On is popular for mountain bike riders in all disciplines.