Hongshang Heat Shrink Heatshrink w/o adhesive 615623 - Hongshang ART002839, Hongshang's heatshrink model ART002839 features a 25.40 mm to 12.70 mm shrinkage ratio of 2:1. This violet heatshrink lacks adhesive and is sold per metre. It is typically used for insulating and protecting electrical connections. Hongshang ART002839 Heatshrink Violet 25.40mm-12.70mm Shrink: 2:1