Metabo HPT NR83A5 - 21° Pneumatic Framing Nailer Metabo HPT = Hitachi Power Tools - same legendary reliability and durability with a new name THIS IS THE TRUE NR83A5!! NOT THE A5(S), THE A5(M) OR THE AA5 THAT OTHER GUYS TRY TO LIST AS THE A5 - Only the NR83A5 features adjustment of the nail depth setting - NR83A5(S), NR83A5(M), AND NR83AA5 do NOT. 2-Inch to 3-1/4-Inch Plastic Collated Full Head Nails covers wide range of applications such as framing, subflooring, sheathing, truss-building, rafters and more Tool-less Nail Depth Adjustment will allow you to get the nail depth just right - whether that's just below the surface, countersunk nice and deep, or short hung for easier removal later - without the need for tools and without missing a step. Selective Actuation Switch Trigger - let's you choose between Single fire or Bump Fire modes on the fly! Whether you're trying to toenail some floor joists in a tight spot or pattern out some 4x8 sheets, the quick change trigger let's you do both quickly and easily without the need for tools.