The specifications of the Razor Barbed Wire: 1.Coil Dia.:500mm Number of Circles:56Circles Standard Covered Length:8-9meters Maximal Covered Length:12meters 2.Coil Dia.:700mm Number of Circles:72Circles Standard Covered Length:11-13meters Maximal Covered Length:15meters 3.Coil Dia.:960mm Number of Circles:52Circles Standard Covered Length:8-10meters Maximal Covered Length:13meters ****** Thickness:0.5mm Wire Dia.:2.5mm Barb Length:22mm Barb Width:16mm Barb Spacking:36mm and Thickness:0.6mm Wire Dia.:2.5mm Barb Length:60mm Barb Width:22mm Barb Spacking:102mm WE CAN PRODUCE THE BARBED WIRE ACCORDING TO CUSTOMER'S SPECIAL REQUEST.