Features 1. Carbon Steel Material: This grease coupler is made of carbon steel with a galvanized surface to resist corrosion, providing durability and long-term use. 2. 90 Degree Design: The 90-degree angle design allows access to hard-to-reach zerk fittings in tight spaces, making it easier to connect in confined areas. 3. Spring-Loaded Design: Features a spring-loaded mechanism to help prevent leakage and improve grease application efficiency. 4. Safe to Use: Includes a silver grease adapter and sleeve, designed for a working pressure range of 3000-4500 PSI, suitable for reliable daily use. 5. Widely Used: Compatible with automotive, farm, truck, and industrial equipment; fits most manual grease tools and hard-to-reach grease points. Specification Material: Carbon steel Color: Silver Size: 7.8 cm Weight: 105 g Package Include: 1x Grease Coupler