Hitachi 18002 O-Ring Parts Kit for NT65A/A2/A3 Nailer All the rings and gaskets needed to do a basic overhaul of the NT65A/A2/A3 Genuine Hitachi parts Includes a diagram showing how to install these parts in the nailer Will fix the NT65A/A2/A3's air leak or slow operation Comes with a 90-day limited warranty Includes all the rings and gaskets needed to do a basic overhaul of the NT65A/A2/A3 This repair kit includes all genuine Hitachi parts Includes a diagram how to install these parts in the nailer Will fix the NT65A/A2/A3's air leak or sluggish operation Comes with a 30-day limited warranty