3M Tubing & Molded Parts, catalog number HDBB-230-1-250, is a black, semi-rigid, flame retardant polyolefin tubing. It has an inner diameter before shrink of 1.45 inches (36.8 mm) and an inner diameter after shrink of 0.5 inches (12.7 mm). It is UV resistant and has a maximum operating temperature of 135 ℃. The tubing is heat shrink molded and suitable for temperatures ranging from -30 to +135°C. It has a minimum shrink temperature of 120 ℃ and a dielectric strength of 10 kV/mm. The product model is Cold-shrink, with a heat shrink type. It is designed for 1-2 breakout transition and features 2-way outlet style with 2 conductor legs. The outer diameter before shrink is 3 inches (76.2 mm), and after shrink, it becomes 1.5 inches (38.1 mm). - 7010293610