"There are three versions of the hook. There's one that's solid metal and it's really heavy. It's sharp. It's not super sharp but it has a point, and because of the weight you could do some serious damage with it. And then there's an aluminium one which is a bit lighter, and then there's a rubber one for if you're to do stunts or there's any danger of cutting someone. Although sometimes I like to switch it out! It's the perfect coffee cup holder - it's literally the exact size. And if you've only got one hand and you're holding some food, it's great to put it on."