200Pcs 3 Sizes Heat Shrink Butt Connectors Insulating Waterproof Electric Marine Car Wire Crimping Terminal

Features:
The thick copper tube ensures a firm and safe crimp every time, providing minimal voltage drop, high current flow and less heat. These will prevent the well-known short circuits and problematic wiring of inferior connectors.
Each terminal has a thick tinned copper tube, which can resist corrosion and keep the wires tight when crimped.
The pen barrel is made of seamless copper, eliminating the problem of pen barrel opening. Your wires will never slip out of the connector.
The insulated pipe has an unique double-wall design. The high-quality 3:1 shrink tube has a heat-activated sealing lining to provide a 360-degree secure seal. Flame retardant, waterproof, can be used underground.
Wire gauge imprint on connectors and color identification. Translucent provides tensile strength, allows visual inspection.
It meets all electrical standards and is very suitable for marine and automotive applications.