The HSTT50-C Thin Wall Heat Shrink Tubing shrinks around wires, connectors, joints, and terminals when heated to protect against abrasion. Applications include insulating and protecting wires/cables in indoor, dry locations. Shrink ratio: 2:1. Temperature range: -67.F to 275.F (-55.C to 135.C). Flame retardant, cross-linked polyolefin. 0.50. Diameter x 100. Long (12.7 mm x 30.5 m). Color Black. 1 roll.