Identify wires quickly and easily with our color coded 3M™ Scotchlok™ Heat Shrink Butt Connector. With excellent pullout strength and strain relief, this tubing is a reliable choice. The pre-insulated transparent tubing and seamless barrel provide a seal to keep water, salt and other contaminants from ruining applications when it's crimped and shrunk. This yellow connector is CSA Certified, UL Listed and RoHS 2011/65/EU Compliant.