Cole Hersee M-115-BP Trailer Connector. 4 Pole. Ideal for boat trailers or RVs towing a car on a flatbed trailer. Polarized to assure proper mating of circuits. Diecast plated steel housing protects terminals from roadsplash. Durable rubber caps protect connectors against moisture and dirt. Features replaceable interiors and spring-loaded socket doors. Brass split-pin contacts are aligned to assure proper contact and minimal voltage drop. Plug locks securely into the opening. Wiring codes are identified on the insulator. Corrosion resistant construction.

Specifications:
- Circuitry: 4
- Input Terminals: Brass
- Contact Material: Screw
- Screw terminals accept up to 12 AWG wire
- Two mounting holes on the flange 17/64" (6.7mm) diameter. 2-15/16" (74.6mm) on centers.
- Mounts through 1-3/8" (34.9mm) diameter hole