When connecting the cable, you can quickly add cables without damaging the main cable. Usage:1) Plug connector into existing main cable, insert new cable end into connector. 2) Tighten the metal blade with pliers. The metal blade inside the connector cuts the insulation of both wires. 3) Check by pulling the cables. 4) Close the protection cover and complete the installation. Characteristics:Voltage: up to approximately 600 volts. Temperature: Resistant up to 105°C. Nominal Cross Section: 0. 75 to 2. 5 mm² AWG 20-14Max: 15A Package Content: 10 pcs of Quick Cable Splicing Device Connector Clips.