Genuine AtomizerWick Nichrome 80 Series 20 Gauge Resistance Wire - 50ft & 25ft Spools Available (25ft) Heat resistant up to 1200C Resistance = 0.652 ohms/ft at room temp Wire Diameter: 0.81mm Shape: round Spool comes with a wire guard to keep your wire from unraveling. It is reusable and just snaps on! 100% SATISFACTION GUARANTEE: We stand by our products and if you are not happy, we are not happy and we will gladly give you a refund. We have 100% positive customer feedback for a reason!