This is a set of 3/8x3 heat shrink tubing from Great Planes.
Features:
Includes: Three pieces of 3/8 x 3 heat shrink tubing
Requires: Shrink tubing on all sides with heat gun, butane lighter or soldering iron
Specs:
Diameter: 3/8
Length: 3
Note: Use a tubing size that is no more than twice the diameter of the object being covered.