Revotec have come up with a clever and neatly engineered solution to the problem of joining air intake ducting hose to intake ducts etc. The Revotec heat shrink sleeves are adhesive lined and produce a strong, neat, light and water/vibration proof joint. They have a shrink ratio of 3:1, ie 90mm will shrink to 30mm. Simple to use with heat gun. Pair of 90mm sleeves supplied.