The F1053/8 BK005 from Alpha Wire is flexible black heat shrink tubing with a 0.375" (9.53 mm) diameter, a 2:1 shrink ratio and a 100.0' (30.5 m) length.
The F1053/8 BK002 from Alpha Wire is a flexible black heat shrink tubing with a 0.375" (9.53 mm) diameter and a 2:1 shrink ratio, supplied in a 500.0' (152.4 m) length.
The F1053/8 BK008 from Alpha Wire is flexible black heat shrink tubing with a 0.375" (9.53 mm) diameter, a 2:1 shrink ratio and a 25 ft (7.6 m) length.