Package of 3 Black 3 in (7.6 cm) long sections with a 1/4 in (6.4 mm) diameter that shrinks to 5/64 in (2 mm)Cross Linked polyolefin tubing is much stronger than PVC tubing and will not burn like PVCHeat activated adhesive lining provides impervious seal to salt water, oil, acids, and sunlight as well as providing strain reliefHighest shrink ratio – shrinks to 1/3 original sizeShrinks at 257 deg F / 125 deg COperating temperature range of -40 deg C to 110 deg C