22 to 18 (0.5-1.0) AWG Tap, 18 to 14 (0.75-1.5) AWG Run, Red, 50 per box, 500 per case Use to electrically connect two wires in a tap, in-line, pigtail, or double run installation, and insulate the connection. For low voltage (automotive) applications. Maximum insulation O.D.diameter of 0.110 inches (2,79 mm) Tap, 0.145 inches (3,68 mm) Run