Fine, non tarnish soft tempered Craft Wire .3 mm in diameter(or 28 gauge) in a 40 yard spool.Used in making crochet wired jewellery, Tiara's, Beaded Flowers/Animals and many other hand crafts. Lacquered- Tarnish-Resistant Wire- Half hard wire thats ideal for jewelry making- wire wrapping- crafting- scrapbooking- and much more! - 99.99% Copper core -  Lead Free- Nickel Free. Medium temper wire is flexible and well-suited for creating components with sharp angles or that need to maintain their shape under moderate stress- such as ear wires- jump rings- or weight-bearing parts of wire-wrapped jewellery. When used to create an element like a clasp- which will be subjected to high stress- it should be hardened after shaping. This can be done by placing it on an anvil or bench block and striking it with a nylon-jaw hammer.