If you have one of these Halfords Trail buggys, the side clips are prone to breaking because the plastic is very thin and the bolt is only short. This part replaces the original clip and makes it stronger so it's less likely to break again. Print in solid PLA with supports for the tube recess on the back

Keep the nut and bolt that came with the buggy and use it to find a similar bolt that's a bit longer to fit through the thicker PLA part.