【Easy to Use】Strip the wire according to 0.35-0.47 inches, push the orange lever to 90° and plug the wires, plug the wires and press the lever down. 【High Temperature Resistance】Use flame-retardant materials, internal shrapnel copper material, better conductive properties, can work continuously at 302 degrees Fahrenheit. 【Safe and Reliable】Selecting flame retardant insulating material modified nylon PA66, which has a long life, no corrosion, anti-aging and pressure 4KV and against electrical shock. 【Time and Effort Saver】No need to wrap the joints with electric tape, these reusable terminal blocks make the job much easier and neater. Easy to repair and replace, only need to unplug the wiring terminal, no need to remove the wire, to prevent wrong connection. There are test hole in every conductor surface, electric test can be completed without removing tape, intuitive and easy. 【Extensive Use】These electrical connectors are widely used in the electronics, communication equipments, instruments, calculator, automatic control system, domestic appliance and warning devices, etc.