The Metabo HPT 12711HPT is a box of 4,000 full round head, smooth shank, hot dipped galvanized wire coil framing nails, 2-1/2 in. x .131. Metabo HPT lists them as great for floor and framing, truss build-up, window build-up, sub flooring, roof decking, wall sheathing and housing construction, and as compatible with the Metabo HPT NV83A5, NV65AN and NV90AGS. Amazon's listing describes them as the same fasteners as the Hitachi Power Tools version, now sold under the Metabo HPT name. • 2-1/2 in. x .131, smooth shank • Full round head; hot dipped galvanized • Wire coil collation • 4,000 nails per box • Compatible with the Metabo HPT NV83A5, NV65AN and NV90AGS