NightGlow Spiral Wrap Properties Photo Luminescent Material Polyethylene Max Operating Temperature 280 Degrees F Min Operating Temperature -40 Degrees F Nominal Inside Dia 3 7/16 in Color Off White Wall Thickness 7/32 in Length 40 ft Width 2 1/8 in For Maximum Bundle Diameter 5 7/8 in For Minimum Bundle Diameter 3 13/16 in Helical Cut Pitch 2.2 in Nominal Outside Dia 3 7/8 in