Adapters for grease fittings (zerk fittings) alter a fitting to work with different grease gun couplers, eliminating the need to redrill or retap the fitting or change out the coupler. They are primarily used to change the thread size or angle of a grease fitting.

Manifolds consolidate multiple lubrication sites into one connection point for a grease gun. These devices reduce the time and effort to lubricate many components in heavy equipment and processing machinery.