Brand new 3" CHROME PLATED ARIEL SQUARE FOUR RED HUNTER FUEL TANK CAP. This fuel tank cap is a exact replica of the orignal one and is made to the highest specifications with great chrome quality. We recommend this for ARIEL bikes with 3" petrol tank neck. This will replace PART NUMBER :- square four red hunter Please do get instore for more BSA happenings in our store Best for restorations and modifications