The Gardner Bender 1/2 inch Heat Shrink Tubing provides abrasion and moisture protection for electrical wire and cable. This tubing is constructed of flame retardant polyolefin. Non adhesive linedPolyoelfin shrink tubing shrinks under heat application to insulate wiring up to half its diameterAlso useful for repairing cords and covering tool handlesMakes strong rope loops and neat endsBlack1/2" x 4"3 per card18-10 AWG1/2 inch pre-shrink diameter, 1/4 inch post-shrink diameter