Features and Benefits:�"ALEMITE" GREASE FITTING�27/32" Length.�7/16" hex size.�19/64" shank length.�Dirt-excluding ball check."ALEMITE" GREASE FITTING 27/32" Length.7/16" hex size.19/64" shank length.Dirt-excluding ball check. Maximum Pressure: 10000 psi. Exceeds 48-hour salt-spray test. 1958 has specialty cap providing a second seal for dust-proof applications. Used on many industrial machines and heavy equipment.