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.SpecificationMaterial: Carbon steelColor: SilverSize: 7.8 cmWeight: 105 gPackage Include:1x Grease Coupler