Time saver: no need to solder or crimp, just use a heat gun to finish the joint, making it much faster and easier than the old way.

Fit for confined and narrow spaces: these connectors can be bent after connection, no need to crimp or solder in tight areas, just control the temperature with a heat gun.

Waterproof and seal performance: each butt connector has two hot melt waterproof adhesive rings, helping it hold up better to moisture.

High temperature proof in a short time: our exclusive material in the butt connectors prevents shrink tubing from melting before the solder ring.

IATF16949:2016 listed: Kuject solder seal connectors meet the latest standard of the International Automotive Task Force, providing a standardized way to repair or modify your car.