300 FT REEL FREEZE FREE SELF-REGULATING; LENGTH 300 FOOT; VOLTAGE RATING 120 VOLT AC; POWER RATING 3 WATT PER FOOT; INSULATION THICKNESS 1/2 INCH; MATERIAL TINNED COPPER (CONDUCTOR), THERMOPLASTIC ELASTOMER (JACKET), FIBERGLASS (INSULATION), METAL/PLASTIC (PIPE)