Superior Parts SP 877-317 Aftermarket Cylinder Ring for Hitachi NR83A NR83A2 NR90AD Compatible with Hitachi: 83AA2 Strip Nailer | NR83A 3-1/4" Full Head Nailer | NR83A2 Strip Nailer NR83A2(S) Framing Nailer, Full Head, Plastic Strip Collation (without Depth Adjustment) | NR83A3 Strip Nailer | NR83A3S Strip Nailer | NR83AA 3-1/4" Clipped head Framing Nailer NR83AA2 3-1/4" Clipped head Framing Nailer | NR83AA3 Clipped Head Framing Nailer | NR83AA4 3-1/4" Paper Collated Framing Nailer | NR90AD Strip Nailer | NR90ADPR Strip Nailer NR90AE 3-1/2" Round Head Framing Nailer | NR90AE(S) Strip Nailer | NR90AF Strip Nailer | NV65AA Nailer | NV65AC Coil Pallet Nailer | NV75A Nailer NV83A 3-1/4" Full Head, Framing Coil Nailer | NV83A2 Full Round Head Coil Nailer | NV83A23 Nailer | NV83A3 Nailer | NV90AG Coil Nailer.