Vapowire is one of the highest quality wire manufacturers on the market. Vapowire spools are 100% machine wound with a special handling process to reduce the amount of contaminants from typical spooling. Vapowire Nickel comes in a 30 foot (9.14m) spools, individually packaged, in a variety of gauges. Nickel wire should not be used to build typical resistence coils. Nickel is designed for specialty coils in a resistence-nonresistence configuration or in specialty devices that natively support nickel based coils, like the DNA40.