22ga Solid Copper Wire Pack of 300ft/3 Colors - 100 feet of Black, Red, & Yellow All 100 Ft Lengths of Various Brands and Spool Sizes as well as loose coiled rolls of wire. Solid Copper Core Tinned Wire for Maximum life span and corrosion resistance - Easy to solder Excellent for use with Breadboards as Hook-Up wire for prototypes and other electrical point to point wiring suited for single core wire