Road PowerAos Primary Wire is manufactured from full gauge copper and engineered to handle the harsh environment of multiple automobile compartments 16-Gauge Wire with 0104" Outside Diameter; 24-Foot Length Applications include: Headlight Circuits; Radios; Relay Switches; Control Panels and other low voltage circuits for use with automobiles; boats; trucks; RVAos and trailers PVC outer-jacket that resists water; oil; chemicals; abrasion and can handle temperatures up to 185¬F (85¬C) RoHS Compliant