The DMM Nutbuster isn’t just a nut key. Oh no, it’s a masterpiece with a wide, rubber handle so you don’t take off a couple of layers of skin when your hand slips off. Take off the handle and you have a 17mm spanner for tightening loose bolts. Are you worried that you might stab yourself with the pointy end? No worries, just thread some accessory cord through the smallest hole to keep it tucked in tighter, so it’s less likely to do you damage in a fall.