Spring loaded: spring loaded sleeve locks coupler in place, helps to secure the connection between your straight coupler and this angle coupler and preventing leakage, make the grease filling more eff more→icient and convenient. Designed: Grease coupler is designed with 90 degree, can grease hard to reach fittings in tight spaces, convenient for you to connect some difficult fittings, the 3 Jaw coupler design snaps on and off grease fittings easier Material:These 90 degree crease coupler are made of quality carbon steel material, the surface is galvanized, which can prevent corrosion to the greatest extent , durable and sturdy, not easy to break,and has a longer service life. For use with most hand-operated …