More than 45 years ago, 3M introduced the industry’s original insulation displacement connector – the Scotchlok™ Connector UR. The latest series of 3M™ Scotchlok™ Insulation Displacement Connectors (IDCs) has kept all that was good about the original connector – the design, the shape, the element technology and the color-coding. Our unique “U” contact provides a dependable electrical connection. A “live-spring” joint is made by driving the “U” contact down into the connector. As the â€œUâ€ contact is pressed into connector, it grasps conductors as it displaces insulation. Contact grips conductor and holds with a firm, resilient pressure. Scotchlok™ wire connectors offer quick, reliable connection with a simple snap and a squeeze, no stripping or twisting.