[Multiple Sizes]: There are three different sizes, including blue and green male and female connectors: Wire sizes: 0.15-1.5mm, AWG: 22-16, Max Current = 10A; Red and Black Connectors: Wire sizes: 1.5-2.5mm, AWG: 16-14, Max Current = 15A; Yellow Butt Connectors: Thread sizes: 4-6mm AWG: 12-10 Max Current = 24A [Material]: The wire connectors are made of copper and insulated PVC which has high tensile strength and elongation. The electrical connector protects splices from water and corrosion, which is durable for long-term use. [Easy to Use]: The round electrical connector insulates and protects electrical connections and is more reliable than traditional crimp terminals. The insulated plugs and sockets are easy to connect to electrical wires for increased reliability and safety. Without soldering, it is easy to use, even a beginner can use it easily. [Wide Application]: The circular electrical connectors are suitable for most occasions, e.g. B. Household appliances, speakers, cars and other electrical cable connection projects. The insulated bullet connector is easily connected to electrical wires to increase its reliability and safety. Functional Material: Copper and PVC; Color: Blue, Red, Yellow, Black, Green; Quantity: 100 pcs What is included: Green Plugs and Sockets - 20 pcs Red Plugs and Sockets - 20 pcs Black Plugs and Sockets - 20 pcs Connectors Blue Plugs and Sockets - 20 pcs Yellow Plugs and Sockets - 20 pcs,"