Versatile Adapter: The oil filter adapter 1/2-28 thread adapter, can be easily convert connections with our aluminum hose adapter reducer fittings, Female 1/2-28 to Male 3/4-16, 13/16-16 and 3/4 NPT Durable Quality: Made of lightweight 6061-T6 aluminum for superior strength and durability. Anodized finish provides long-lasting performance Wide Application: Kodilin oil filter suppressor adapter fits commonly used filters for oil cooler tank fluid lines fuel pump lines Fuel Compatible: Our fittings and adapters are fully compatible with gasoline and alcohol fuels, ensuring optimal performance and reliability in a variety of applications Packaging: Including 5PCS oil filter adapters and 10PCS NBR O rings to provide a tight, secure, leak-free connection that reduces the risk of leakage and improves overall system integrity 1/2 28 to 3/4 16 adapter