I just bought the cheaper throttle lock off of amazon and it's great. It's not meant to be a constant throttle lock or cruise control but it's great to rest your hand for a little while. I've used it out on the back roads but not on the highway yet. To use it effectively I've found that it needs to be as flat as possible on the bar and not up near the thumb where the grip starts to curve. Very happy with the $20 purchase. http://www.amazon.com/2Wheel-Ride-GC-1-Motorcycle-Throttle/dp/B0055QOKC8/ref=sr_1_2?ie=UTF8&qid=1403011775&sr=8-2&keywords=motorcycle+cruise+control+throttle+lock