The Performance Tool W54241 Grease Fitting is a pack of 10 high-quality grease fittings designed for various applications. These grease fittings feature a 1/8" NPT (National Pipe Thread) size, which is a common size used in many industrial and automotive systems. The fittings are made from durable materials to ensure long-lasting performance and resistance to corrosion. They are designed for easy installation and provide a reliable connection for grease lubrication systems. These grease fittings are compatible with standard grease guns and allow for convenient and efficient machinery, equipment, and vehicle lubrication. With a pack of 10 fittings, you'll have an ample supply to tackle multiple projects or replace existing fittings as needed.