This comes supplied as a pair complete with gaskets and fixing nuts. These function just as normal float bowls, but are transparent, so are a dual purpose item: Use them to customise your bike while continuing to ride it as normal on the road. Also use them in the workshop; because you can see everything operating inside the float bowl, there are increments on the side of the bowl to aid adjustment of your float levels accurately and you can see if you have any contaminants in the fuel and look for other problems such as a sticking float needle.