1,Length:1", 1.5", 2", 2.5" 3". 2,Specification: BWG8, BWG9, BWG10, BWG11, BWG12. 3,Packing:Cartons, case. 1,Length:1", 1.5", 2", 2.5" 3".2,Specification: BWG8, BWG9, BWG10, BWG11, BWG12.3,Packing:Cartons, box. umbrella head Roofing nail with twisted shank