Filter end is anodized alum. to protect from corrosion if being used with alcohol and is for the 2.00" System 1 oil/fuel filter housing.
Great part to buy as an extra in the event of dropping the fuel filter and damaging one end you will be ready with this spare.
Note: This is a used item. This item might have been taken in on a trade. RBS may have inspected this item and deemed re-usable. There is no warranty expressed or implied with this item.