I've always found that star nut that locks the throttle in place for resting the hand was a bit cumbersome on most Harleys that have them. So, I've thought of the Break-a-way which is quite expensive and have installed a couple on other bikes. I bought a device that clamp over the grip and when pushed towards the brake lever while underway works but mine broke one day when pushed a bit off center. Then I came across something that really is fool proof and easy to use. I found this device on www.barefootwillies and at less than ten bucks with free shipping was worth a try. I love it. It is a small plastic piece that clamps over the star nut with a bit of a lever stick out. Follow the instructions and it works like a charm. Oh, I have no affiliation with barefoot willie except being a happy customer.