This 90 Degree Grease Coupler is made of carbon steel with a galvanized surface. Its spring-loaded design prevents leakage and allows for efficient and convenient grease filling. Equipped with 1-piece silver grease adapter and 1-piece sleeve, it is safe to use with a working pressure range of 3000-4500 PSI. Suitable for car, truck, and farm equipment, it is widely used and compatible with most manual grease tools. Features 1. Carbon Steel Material: This grease coupler is made of quality carbon steel material, with a galvanized surface to prevent corrosion, sturdy and durable, not easy to break, and can be used for a long time. 2. 90 Degree Design: This grease coupler is designed at 90 degrees, can grease hard-to-reach zerk fittings in tight spaces, convenient for you to connect some difficult fittings. 3. Spring-Loaded Design: This grease coupler is a spring-loaded design to prevent leakage and make grease filling more efficient and convenient. 4. Safe to Use: Equipped with 1-piece silver grease adapter and 1-piece sleeve, working pressure range For 3000-4500PSI. And convenient for long-term use in daily life. 5. Widely Used: This 90-degree grease coupler can be used in car, farm, truck, or industrial use, suitable for hard-to-reach grease accessories such as car, truck, and farm equipment, also suitable for most manual grease tools. Specification Material: Carbon steel Color: Silver Size: 7.8 cm Weight: 105 g Package Include: 1x Grease Coupler