Includes (2) 174054 Head ValvesNew, Bulk PackedGenuine OEM Replacement Part # 174054-2PKConsult owners manual for proper part number identification and proper installationPlease refer to list for compatibilityCompatible with the following: Bostitch: CF15 Corrugated Tool MCN250S, Metal Connector Nailer, MCN150 Metal Connector Nailer, N75C Sheathing Nailer, N66C Nailer, N66BC Cap Nailer, MCN250 Metal Connector Nailer, N66BC-1 Cap Nailer, N75C-1 Coil Sheathing/Siding Nailer