The 7000148831 from 3M is semi rigid heat shrink tubing with 3 to 1 shrinkage ratio and 121°C shrink temperature. This heat shrink tubing has 0.400" (10.16mm) supplied inner diameter and 0.150" (3.81mm) recovered inner diameter. The 7000148831 is made of black color polyolefin (PO), irradiated. Operating temperature range is from -55°C to 110°C.