The GBS380SBI is a heat-shrink sleeve manufactured by the BM Group of Italy. It is glueless, has a 2:1 ratio, and is 38mm in length. The sleeve is made of polyolefine material and has a length of 1m. The sleeve is designed to provide a secure and protected seal around cables to ensure optimal protection and performance. The sleeve's construction also helps protect against dust, moisture, corrosion, and abrasion. It is designed to withstand a wide range of temperatures and can easily be applied to a variety of cable types. The sleeve is ideal for use in telecommunications, electronic, automotive, and computer applications.