Large 4-Way Grease Fitting Tool - Bulk. Designed for 1/8" NPT fittings. Tap repairs 1/8" NPT threads. Wrench removes 7/16" and 3/8" hex fittings and plugs. Wrench installs new fittings. 1/8" NPT "easy-out" removes broken fittings. Bulk. 25/box.