This is the high quality heat shrink we use in our installations. This size is perfect for 6 B&S cable, for a professional finish on battery terminals, Anderson plug lugs and joins.
The high flow adhesive flows out of the ends of the tube to provide a perfect seal, and once dry, provides additional strength the cable and join.
Most heat shrink tubes are 2:1 shrink ratio. At 3:1 this heat shrink has a greater range of application and the higher shrinkage provides a stronger seal.