The stranded conductor is made from tinned copper that offers high quality performance for all general-purpose electrical applications, and the PVC insulation protects the wire against abrasion, chemicals, oils, and solvents.016" Thick, 0.25 inch each end The white leads are cut to 12 inches each and stripped to 1/4 inch at each end for your convenience. Cut And Stripped Wire, 14 AWG, Stranded, White 12in Leads, 500PK By conforming to UL and MIL-spec specifications, this wire provides excellent uniformity for any additional processing, stripping, or terminating required.