All the non insulated butt connectors assortment kit are built with copper materials to ensure high strength, wear resistance and anti-age properties and with strong hardness and rust resistance. Come with a plastic organizer box, which keeps them clearly, allowing you to access the one you need easily by a glance. Features -Color:Silver -Material: copper - Size: 12.50X6.50X2.10cm/4.91X2.55X0.83in - Size: 1.50X0.30X0.30cm/0.59X0.12X0.12in - Size: 1.50X0.39X0.39cm/0.59X0.15X0.15in - Size: 1.50X0.54X0.54cm/0.59X0.21X0.21in -Made of copper, with strong durability, provide you a higher degree of conductivity and more corrosion resistance. -Come with a compact organizer box to save you time searching and takes up no space in your house. -Reasonable design, make the wiring firm, the stability is good, and it can serve you well. Can bring you convenience. -It can be well applied to automobile electrical maintenance and easily help you improve work efficiency. -Thanks to its reliable and durability, you can use it vehicle applications, such as automotive and marine with confidence. Package list: 80 x AWG18-22 Butt Connectors 60 x AWG14-16 Butt Connectors 60 x AWG10-12 Butt Connectors