LINCOLN INDUSTRIAL 2-3/4 Grease Injector Needle Nozzle The LINCOLN INDUSTRIAL 5803 Grease Injector Needle Nozzle is designed for use with any hand-held grease gun. This nozzle features a screw-on style thread that connects to both rigid extensions as well as flexible hoses, allowing grease gun operators to easily contact flush type fittings. The LINCOLN INDUSTRIAL Grease Injector Needle Nozzle is ideal for industrial or automotive applications.