Usage Tips:This Copper Connector makes wire installation easier. the Copper Connector makes the wire core no longer have loose strands, and effectively prevents the wire ends from fraying and breaking. The wire ferrules are made of quality copper and tinned to be anti-oxidation and corrosion, which ensure a long service life. Wire Ferrules Kit contains 7 sizes of copper terminals (suitable for AWG10-26), which could be widely used in household appliances, automobiles, electrical industry, mechanical equipment, power distribution cabinets, etc. Equipped with 7 sizes of heat shrinkable tube, each heat shrinkable tube length is 20cm, you can freely cut the suitable length according to your needs. Colour:Copper+silver+black Material:Copper + rubber Package Contents: 970 x Wire Ferrules 48 x Heat Shrink Tubing(8 specifications of 6 each) Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.