Specifications: Material: Nylon, Copper, Tin Wire Range: 22-18 AWG(Red) / 18-14 AWG(Blue) / 12 AWG(Yellow) Maximum Operating Temperature (Fahrenheit): 221 Degree Fahrenheit Maximum Recommended Voltage Rating: 600 V Product Includes: T-Tap Wire Connector - Red: AWG 22-18; Wire range: 0 5-1 5mm² - Blue: AWG 18-14; Wire range: 1 5-2 5mm² - Yellow: AWG 12; Wire range: 2 5-4 0mm² Male Spade Connector - Red: AWG 22-18; Wire range: zero 5-1 5mm² - Blue: AWG 18-14; Wire range: 1 5-2 5mm² - Yellow: AWG 12; Wire range: 2 5-4 0mm²