LINCOLN INDUSTRIAL 3-1/4 90° Angle Grease Fitting Adapter LNI-5859 The LINCOLN INDUSTRIAL LNI-5859 is a 90-degree angle grease fitting adapter designed to provide easy access to hard-to-reach lubrication points. This adapter eliminates the need to remove deep-dish wheels for lubrication of tie rod ends and ball joints, saving time and effort. With a maximum operating pressure of 7,000 PSI, the LNI-5859 ensures reliable performance in demanding applications.