ZERK EXTRACTOR, COMPATIBLE HOSE INSIDE DIAMETER NOT APPLICABLE, CONNECTION THREAD SIZE 1/4 IN.-28, COMPATIBLE PRODUCT TYPE GREASE FITTINGS, COMPATIBLE WITH MANUFACTURER MODEL NUMBER NOT APPLICABLE, COMPATIBLE WITH GRAINGER PART NUMBER 52NZ23, 52NZ25, 52NZ28, 52NZ33, 52NZ48, 52NZ49, 52NZ50, 52NZ54, 52NZ62, 52NZ73, 52NZ77, 52NZ79, 52PA03, 52PA04, PRODUCT TYPE ZERK EXTRACTOR, MATERIAL STEEL, INCLUDES 1/4 IN-28 THREADS TAP FOR RETHREADING, FEATURES O