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 efficiency during grease application. 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 cars, trucks, farm equipment, and industrial machinery; works with most manual grease tools for various maintenance applications. Specifications Material: Carbon steel Color: Silver Size: 7.8 cm Weight: 105 g Package Includes 1 x Grease Coupler