Wall thickness before shrinking: Wall thickness before you shrink the tube.
Wall thickness after full recovery: The max wall thickness, usually the real thickness is smaller because it’s not fully recovered.
Inner Diameter before shrinking: Inner diameter before you shrink the tube.
Inner Diameter after full recovery: The smallest diameter, usually the real diameter is bigger because it’s not fully recovered.
Shrink ratio: Usually it is 2:1, 3:1, 4:1 or even 6:1
With adhesive or Not: Also recognised as a single wall or dual wall. Without adhesive means not waterproof.
Minimum shrink temperature: The Minimum temperature to make the tube start shrinking.
Operating Temperature: The temperature range the tube could resist for a long time, like years.