Ancor 320203 Heat Shrink Step-Down Multi-Wire Connectors, 16-10 AWG. 3 pack. An assortment of adhesive lined heat shrink butt connectors that can be used as a step-down from one gauge size to another or as a multi-wire connector for one gauge size wire. These connectors offer a sealed alternative for products such as a quick-tap or 3-way connector in areas where corrosion is a concern. 4:1 shrink ratio tubing to ensure a watertight seal between wires; Flared barrel with uniform copper wall ensures an easy and proper mechanical crimp; Crimp indicator on barrel for proper placement of installation tool; Clear heat shrink tubing ensures crimp accuracy; Colored stripes on the barrel indicate which crimp die to use, regardless of application.