Item Type: Wire ConnectorsMaterial: Nylon and copperWidely used in automobiles, motorcycles, power electronics industry, electrical equipment and so on1NO LEAKAGE SITUAION: Copper and nylon materials. No straps are required to avoid the failure of straps caused by inconsistent specifications 2SAFE AND FIRE RESISTANT: Less insulation loss caused by electric shock fire, and the interface can prevent rat bite, more safe 3REMOVABLE AND DURABLE: Suitable for parts where power supply needs to be removed or wires replaced. Well crimp, the shield is thick and durable, and the nylon won't split when you crimp correctly. Can be well combined together to achieve a tight effect 4WIDE APPLICATION: Widely used in automobile and motorcycle, power electronics industry, electrical equipment, industrial automation, street lighting, transportation, post and telecommunications, petrochemical, industrial construction machinery manufacturing and other fields of power control system 5DIFFERENT COLORS: The assortment kit contain red, blue and yellow male female wire connectors, easy for you to distinguish, very convenient20 x Red Insert Spring 22-1620 x Red Insert 22-1620 x Blue Insert Spring 16-1420 x Blue Insert 16-1410 x Yellow Insert Spring 12-1010 x Yellow Insert 12-101 x Storage BoxDetermine the specifications before use.