Shrinkflex 2:1 Shield heatshrink tubing is a unique dual wall combination of a polyolefin outer layer and an inner layer of conductive cloth with high frequency EMI shielding properties. Shrinkflex Shield is flame retardant abrasion and chemical resistant, and is an ideal solution for for protecting wire and cable bundles while providing shielding from external interference. Shrinkflex Shield heatshrink tubing is available in Black.