Easy to UseSolderless, frizz-free, you only need a heat gun to complete the connection, much faster and easier than before. Better connectivity Low temperature solder ring mixed flux improves circuit connection. Double waterproof designThere are two waterproof hot glue rings and hot glue inside each butt connector to prevent water from entering the wire. High Temperature and Aging ResistanceProtecting cables and reducing the risk of fire in railways, ships and ships electrical networks Scope of delivery40 PCS White (AWG 26-24), 100 PCS Red (AWG 22-18), 90 PCS Blue (AWG 16-14), 20 Yellow (AWG 12 -10) Solder terminals can be used by 0.25mm to 6mm wire. Specification: Material: Tin Ring Color: Red, Blue, White, Yellow 100% Brand New \u0026 Top Quality -Simple step to connect wires, solder , insulate and seal - Ideal for use in marine and automotive applications -Hot melt adhesive for polyolefin pipes indoors and outdoors -Weld and Seal with Advanced Sealing -Polyolefin heat-shrink butt joint improves pull-out resistance, provides sealing, strain relief, cable inspection and insulation Color as shown Quantity delivered: 250 pieces\/box