1.7 Pin Spiral Coil for Truck/Trailer/Semi-trailer 2. Two N type Alu. Plug 3. Hytrel coil I.D. 76mm 4. 6x0.75+1x1mm2 5. 24V 7 Pin Spiral Coils offer outstanding operational performance from the total weatherproof plugExtremely durable and oil resistantComply with ISO 7 Pin Spiral Coil for Truck/Trailer/Semi-trailer