18 Gauge Pre-Tinned Wire is the perfect solution for fashioning custom hooks and hangers, as well as embellishments like cat whiskers, angel halos and more. Available in 3 popular gauges: 16, 18 & 20. Remember: the higher the number the thinner the wire. Arcor Wire is conveniently pre-tinned, top quality copper wire that is proudly produced in America! Sold in 4 ounce spools.