MUYI 10 Kit 4 Pin Way Waterproof Electrical Connector 1.5mm Series Terminals Heat Shrink 20-16 AWG male & female waterproof connectors. Operating temperature : -10~+80. Easy to install under soldering and crimping. 4 position rectangular black housing connector (hole dia: 0.24"). Use for car, truck, boat, motorcycle, and other wire connections.