Size:22gauge/0.8mm, 23gauge/0.7mm,24gauge/0.6mm, 26gauge/0.5mm,30 gauge/0.3mm in thickness, great for craft project Material:Made of 304 stainless steel, shinny in the surface, has high strength and not easy to deform Soft and Durable: The wire is primary color, close to gray. Abrasion resistant and long-lasting for use Wide Application: Great for various general jewelry craft work and binding delicate pieces of jewelry together, also can double if needs thicker wire.