Spring loaded: The spring-loaded sleeve locks the coupler in place, helping to secure the connection between your straight coupler and this angle coupler, preventing leakage and making grease filling more efficient and convenient. Designed: The grease coupler features a 90-degree design, allowing access to hard-to-reach fittings in tight spaces. The 3-jaw coupler design snaps on and off grease fittings easily. Material: These 90-degree grease couplers are made of high-quality carbon steel with a galvanized surface to provide maximum corrosion resistance. Durable, sturdy, and built for long service life. Compatible with most hand-operated grease guns. Connects to standard grease couplers and works with flex hose or rigid pipe. Maximum operating pressure: 4,500 PSI. Color: Silver Material: Carbon Steel Package Contents: 1 set x coupler adapters Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.