Toolcraft-Poly-Isobutylene-Self-Welding-Repair-Tape-Toolcraft-MT-1910-P-When-layers-of-the-tape-are-stretched-&-laid-in-contact-with-each-other-they-merge-together-to-effectively-form-a-solid-rubber-part-P-P-The-conformable-black-non-adhesive-poly-isobutylene-based-tape-has-strong-elastic-qualities-&-backed-by-a-thin-film-that-can-be-stripped-off-cleanly-&-easily-P-Toolcraft-MT-1910-Poly-Isobutylene-PIB-Auto-Welding-Repair-Tape-Black-19mmx 10m