The GBS380STR with Heat shrink sleeve glueless 2:1 ratio 38 mm length 1m polyolefin material manufactured by BM Group is an electronic component used for insulation. This product is made from polyolefin, which has excellent resistance to heat, water, chemicals, and abrasion. It also has excellent electrical insulation properties. The 2:1 shrink ratio of the sleeve is designed to ensure complete coverage of the insulation around the electric cable. This product comes with a heat shrink sleeve, which uses heat to shrink the sleeve when applied, creating a tight and secure fit. It is also glueless, which makes it simple to install with no additional adhesives or tape. Furthermore, it has a length of 1 meter, providing a long-lasting seal.