Product Type: wire crimp terminal block with insulating sleeve assortment kit Product Meterial: The terminal block are made of tin-plated red copper and the insulating sleeves are made of nylon, high conductivity, anti-oxidation, durable enough for your use Package Include: In this kit, it include male and female crimp terminal connector block insulating sleeves total packed in a plastic box Easy to Use: You just need to connect the male and female terminals at both ends, and then the male and female terminals docked to complete the wiring easily Application: These spade terminal can be widely used to home appliances, auto, audio system for battery or rocker switch quick connecting/disconnecting