The YT-068661 Set of Heat Shrink Sleeves is manufactured by YATO to protect wire connections, resist water, dust, heat, and salt. This electrical insulation set is made from polyolefin material with solvent adhesive-type glue for an airtight seal. It contains 100 pieces of heat shrink sleeves, with an inner diameter, before shrinking, of 2.0mm. After shrinking, the inner diameter is 1.0mm. The shrink temperature is 80-110°C and it has a shrink ratio of 2:1. This product is perfect for wire connections, insulation of soldering joints, and corrosion protection.