GOOD QUALITY MATERIAL: The electrical wire connector plugs are made of nylon materials, and safe. HIGH PRECISION: The female & male connector terminals are made of high precision brass tinned materials.It has better electrical conductivity and easy to be crimped. WIDE APPLICATIONS: Corrosion-resistant,wear-resistant,waterproof and dustproof, without loss of electronic qualities or leakage after installation. In-line, flange, or PCB mount are available. They are suitable for wire connectors of car,motorcycle, scooter, truck, quad bike, caravan, boats. EASY TO INSTALL: Just use crimping tool to crimp the terminals and you can finish installations quickly. Buckle design is easy to install plug connectors. 2 Pin Set of Connector Plugs: 4 x Two Pins Male Connector Housing 4 x Two Pins Female Connector Housing 8 x Male Terminal 8 x Female Terminal 3 Pin Set of Connector Plugs: 3 x Three Pins Male Connector Housing 3 x Three Pins Female Connector Housing 9 x Male Terminal 9 x Female Terminal