Package Includes: 500 Yellow heat shrink butt connectors that can be used on wire AWG from 12 to 10.

Tinned Copper Core: Butt connectors use a heavy-duty copper core, strong crimp, higher conductivity.

Solderless Crimping: Insert the wires to be connected, crimp both sides with crimping pliers, and then heat with a heat gun.

3:1 Shrink Ratio: Marine grade heat shrink tubing provides high tensile strength and enough hot melt adhesive inside the tubing to ensure waterproof performance, your wires will never slip out of the wire connectors.

Wide Application: Heat shrink wire connectors are waterproof, stable, and corrosion-resistant and are used in the automotive, marine, electrical, and electronic industries.