Features: - The oil filter socket set is used to remove and install the fuel filter cap when replacing the old one. - All for steel forging, and surface blackening treatment. - Different module Numbers correspond to the different inner diameter and tooth numbers, and corresponding models are also different. - Tools are well stored and sorted in a compact case. The specifications of the cups have been marked for easy identity and use. - Different module Numbers correspond to different inner diameters and tooth numbers, and the corresponding model.