All terminals and connectors are constructed of copper, and are tin-plated to ensure maximum electrical conductivity after crimping. Insulation sleeve provides good dielectric strength and withstands the pressure of crimping. Strip wire insulation, crimp connector barrel with a wire . Feature - Color: As shown. - Size: 20.00X10.00X3.00cm/7.86X3.93X1.18 inch. - Material: Copper. - Various Connectors: Package comes with 540 insulated terminals and connectors in the most commonly used sizes. - Used For Electrical handy assortment of terminals and connectors included for quick electrical repairs. cable lugs are applicable to the connection of copper or Aluminium core cable and electronic apparatus. - The products adopt friction welding workmanship. The lugs have the characteristics such as high weld strength, long life and so on. - Insulation sleeve has good flexibility and good insulation effect. Specification - 6.3 Type: Inner diameter: 6.3mm, thickness: 0.4mm(male), 0.8mm(female), compatible wire:0.75-2.5mm²(AWG 18-14) - 4. : Inner diameter: 4.8mm, thickness:0.35mm(male), 0.5mm(female), compatible wire:0.75-2.5mm²(AWG 18-14) - 2. : Inner diameter: 2.8mm, thickness:0.25mm(male), 0.5mm(female), compatible wire:0.5-1.5mm²(AWG 22-16) Package list: 540 x terminals