Features 1. Carbon steel material: The grease coupler is made of high-quality carbon steel material, the surface is galvanized to prevent corrosion, durable, not easy to break, and can be used for a long time. 2. 90-degree design: This grease coupler has a 90-degree design, which can lubricate the oil nipple fittings that are difficult to reach in a small space, which is convenient for you to connect some difficult fittings. 3. Spring-loaded design: This grease coupler is spring-loaded to prevent leakage and make grease filling more efficient and convenient. 4. Safe to use: Equipped with 1 piece of silver grease adapter and 1 piece of sleeve, the working pressure range is 3000-4500PSI. And it is convenient for long-term use in daily life. 5. Wide range of uses: This 90 degree grease coupler can be used for car, farm, truck or industrial use, suitable for hard-to-reach grease accessories such as cars, trucks and farm equipment, also suitable for most hand grease tools.