Great for practicing wire wrapping technique, perfect for craft projects. Tarnish Resistant Treatment will help keep your projects looking bright, although it is not 100% non-tarnish. 20 Gauge Wire (.032 inch.) 15 yard spool (45 feet or approximately 13.5 meters) PLEASE NOTE: PLATINGS AND COLOR COATINGS ARE PERMANENT, BUT THIS DOES NOT MAKE THEM IMMUNE TO SCRATCHES AND DINGS. FOR LEAST RISK OF DAMAGE TO THE WIRE'S SURFACE, WE RECOMMEND USING NYLON JAW PLIERS WHENEVER POSSIBLE.