SP 877-486 Aftermarket Cylinder Compatible with HitachiProduct DescriptionBrand New - Unused PartsTop Quality,Generic Aftermarket Part - 30 Day Money Back GuaranteeIncludes (1) Aftermarket Cylinder as picturedItem Specifications:Model: SP 877-486SP 877-486 Aftermarket Cylinder Compatible with Hitachi NV45AB, NV45AB2, NV45AB2(S) , NV45AE replaces 877-486.Compatible with Hitachi:NV45AB2 Side Load Coil Roofing NailerNV45AB2(S) Bottom Load Coil Roofing NailerNV45AE 1-3/4" Side Load Coil Roofing NailerNV50A1 Light-Duty Coil Utility NailerN5021A 15/16" Wide Crown StaplerN5024A 1" Wide Crown StaplerNV50AP2 Full Round Head, Coil, Wire Collation Pasti-Tacker PlusNV45AA Heavy Duty Coil NailerNV45AB 1-3/4" Heavy Duty, Roofing Coil NailerN5024A2 StaplerIf you're not sure whether or not a parts you're ordering fits your model, please email us BEFORE you order.