This is special heat shrink I have the #FAM logo printed on. It is available in a few sizes you can choose from. I am updating this right now so bear with me please. 
22mm is adhesive lined fits my 1/0 cable
19mm is adhesive lined and too small for my 1/0, but fits other 1/0 fine. Fits my 4awg with flex loom.
16mm is good for my 4awg without flex loom, and other 4g on the market.
13mm is good for sizes between 6 and 4g, also good for speaker pants.
10mm is good for 8g and i use it on crimp connectors and rca cables too.