The 3M™ heat shrink heavy wall cable sleeves itcsn are designed to provide reliable performance for electrical splices, connections and terminations, as well as mechanical and environmental protection. itcsn heavy wall cable sleeves are cross-linked polyolefin. they are highly split resistant and fast shrinking to provide rapid installation. the cut-to-length sleeves come standard with a factory applied adhesive/sealant. order any of several packaging choices or look for the counter merchandiser assortment at a 3M™ authorized distributor.