An amazingly clever, simple solution to relieve wrist fatigue on long rides. Installs over any throttle grip in seconds, no tools required. The patented smart-clip tension design locks easily into place against the brake lever to maintain your cruising speed, without the need to hold the throttle. Disengaging is as easy as returning the throttle to a closed position or giving the break lever a squeeze. High-mile rides just got a little more comfortable. Two sizes: Small (for Street and Sport Bikes), Large (for Cruisers). Black.