- Durable Construction: Made from high-quality carbon steel with a galvanized finish, this 3-jaw coupling grease fitting adapter ensures maximum durability and extended lifespan. Its robust design is ideal for long-term use. - Spring-Loaded Sleeve: The adapter features a spring-loaded sleeve that securely locks the coupling in place, providing a reliable connection between your straight coupling and angle coupler. This innovative design minimizes leakage and enhances grease filling efficiency. - 90-Degree Angle Design: Designed with a 90-degree angle, this grease coupling is perfect for accessing hard-to-reach fittings in tight spaces. It simplifies the connection process to challenging fittings, and the 3-jaw coupling design allows for quick attachment and detachment of grease fittings. - Wide Compatibility: Compatible with most handheld grease tools, this 90-degree grease coupling operates effectively within a pressure range of 3000-4500 PSI, making it suitable for various applications. - Versatile Applications: Ideal for greasing fittings in cars, trucks, and agricultural equipment that are difficult to access, this grease coupling ensures efficient lubrication and proper maintenance of critical components. This product combines reliable materials, innovative design, and versatility, making it an essential tool for both professional and DIY maintenance tasks.