The Collated Duplex Nails are intended for temporary fastening of wood, for applications such as concrete formwork, bracing, or scaffolding assembly. These duplex nails have a large top nail head and an increased spacing between nail heads to make it easier to pry the nails out of material. These nails feature a durable plastic collation material to stand up to the rigors of the jobsite. Available in 2 lengths: 8D (2 1/4” Drivable Length / 2 7/8” Total Length) & 16D (3” Drivable Length / 3 5/8” Total Length).