18AWG - 36AWG 1. conductor material option (1) BC ( bare copper ) (2) TC ( tinner plated copper ) (3) SC ( sliver plated copper ) (4) other 2. Insulation material option (1) PP (2) PE (3) TPU (4) HDPE (5) other 3. fill material option (1) cotton (2) nylon (3) kelver (4) other 4.outer sheath material option (1) PVC (2) TPU (3) teflon (4) PTFE (5) silicon (6)other 5. Diameter for conductor, insulation, outer sheath approval