Nichrome 80 Series 30 Gauge Resistance Wire - 100ft, 50ft & 25ft Spools Available (50ft) with WIRE GUARD Heat resistant up to 1200C Resistance = 6.76 ohms/ft at room temp Wire Diameter: 0.254mm 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!