Spring loaded sleeve locks 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 with a 90-degree angle to grease hard-to-reach fittings in tight spaces. The 3-jaw coupler design allows for easy snap-on and snap-off of grease fittings. Made of quality carbon steel material with a galvanized surface to help prevent corrosion, ensuring durability, strength, and a long service life. Compatible with most hand-operated grease guns. Connects to standard grease gun 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: Light shooting and different displays may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.