The rubber grip is a heat shrink rubber tube, so it can be easily attached to a rod.Flexible and reliable product that is resistant to salt water and anti-slipThe grip is non-slip so you wont get tired. Not only can it be used for fishing rods, but also for shaku and fish handles.Heats the tube surface temperature within 248°F (120°C) or more than 150°C).The contracting heating device uses household gas stoves, torch lamps, electric heaters, etc. to heat and shrink evenly while slowly rotating the film from one end of the tube to the other.(Do not use hot water)