Package: 876-174 876174 Piston O-Ring (10 PCS)Compatible Models:NV45AB NV45AB2 N5008AC N5010A NT50A NT65A2Compatible with NV45AA Heavy Duty Coil Nailer, NV45AB 1-3/4inch Roofing Coil Nailer, NV45AB2 Side Load Coil Roofing Nailer, NV45AB2(S) Bottom Load Coil Roofing NailerCompatible with NV45AE 1-3/4inch Side Load Coil Roofing Nailer, NV50AP2 Full Round Head Nailer, NV50A1 Light Duty Coil Utility Nailer, NV50AA Light Duty Coil Utility NailerColour:blackMaterial:rubberPackage Contents:1 set x nv45ab2 Piston O-RingOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.