25ft - Kanthal A1 Flat Ribbon - 0.1mm x 0.4mm - Electrical Resistance Heating Wire 25' Roll Heat resistant up to 1500C / 2732F Maximum continuous operating temperature of 1400C / 2552F Shape: Flat Ribbon , 0.4 x 0.1 mm 25ft, 50ft,100ft Roll This product is not intended to be used with prohibited or illegal products. The product shall be used by advanced users ONLY. In no event, regardless of cause shall Pure Atomist the distributor/reseller be liable for any type of bodily injury or property damage.