BELDEN~RG58AU Coax/Foam/Strnd 20 AWG stranded (19 x 32) .037" tinned copper conductor, foam polyethylene insulation, tinned copper braid shield (95% coverage), PVC jacket. Physical Characteristics (Overall) Stranding Conductor Material Dia. (in.) 19 x 32 Tinned Copper .037 Insulation FPE - Foam Polyethylene .114" Outer Shield Outer Shield Material: Type Outer Shield Material Coverage (%) Braid TC - Tinned Copper 95.000 Outer Jacket Outer Jacket Material: Outer Jacket Material PVC - Polyvinyl Chloride Overall Cable Overall Nominal Diameter: 0.193 in.