Item Name: Quick Wire Terminal Electrical Cable Connectors Snap Splice Lock Wire Connector. Material: Nylon, Copper, TinMaximum Operating Temperature (Fahrenheit): 221 Degree FahrenheitMaximum Recommended Voltage Rating: 600 VWire Range: Red 0. 5-1. 5mm, Blue 1. 5-2. 5mm, Yellow 2. 5-4. 0mmQuantity: 30PcsAvoid Electric shock, strong outer packaging can avoid accidental touch.Easy