NightGlow Spiral Wrap Properties Photo Luminescent Material Polyethylene Max Operating Temperature 280 Degrees F Min Operating Temperature -40 Degrees F Nominal Inside Dia 7/16 in Color Off White Wall Thickness 1/16 in Length 66 ft Width 1/2 in For Maximum Bundle Diameter 7/8 in For Minimum Bundle Diameter 1/2 in Helical Cut Pitch 0.5 in Nominal Outside Dia 9/16 in