Plews 11-201 Grease Fitting GF, 1/4" PT STRAIGHT, 5 PACK Plews-LubriMatic Grease Zerk Fitting with check ball that prevents dirt from entering the fitting Replacement grease fittings for automotive, farm, equipment and industrial use Straight - short Fits 1/4-18 NPT threads 9/16 inch wrench size; 7/8 inch overall length; 5 Pack