The bobbin led mudguard fitting rear light is a neat light that is ideal for fitting to mudguards permanently mounted with bolts its a great commuting solution and will fit most mudguards with two holes so long as the holes arent being used something else like mudguard stays keep yourself visible to vehicles approaching you from behind with the flashing bobbin rear rack light coming supplied with batteries you are able to remove straight from the packaging fit to your bike and ride awa