The most trusted wire in the beading world, Artistic Wire is known for its quality and ease of use. 18 gauge is fairly thick (1.02mm) but flexible. Tinned Copper does not have the unique, tarnish-resistant coating and is meant to patina (darken) over time to provide a vintage look. Nickel/Lead Safe. Made in the USA. Qty:10 yd (9.14m) spool