Sold as one pair, the male and  female halves join to connect two single core wires, therefore it would require two bullet pairs to connect one twin-core electrical cable.

Choose from the three different sizes: Red, blue or yellow.
Yellow =  3 to 4 mm wire
Blue =   2 to 3 mm wire
Red = 1 to 1.5mm wire

Simply insert your wires and squeeze it closed to connect and crimp. Quick, easy, and secure. Nylon insulation rated to 105°C.

 Quantity : 1 pair
Cable entry size: 4 mm
 Insulation : Nylon

Note: The 4mm refers to the diameter of the plug not the wire.