Heat treated tool steel 6150 - Rockwell hardness 50-52 Aerospace grade #2024 Aluminum piston Mechanically locked piston driver interface Compatible With: | NR83A2(S) Framing Nailer, Full Head, Plastic Strip Collation (without Depth Adjustment) | NR83A 3-1/4" Full Head Nailer NR83A3S Strip Nailer | NR83A3 Strip Nailer | NR83A2 Strip Nailer

