For use on precious metal and metal clays. Each one is 9 ¹⁄₄" long with a sanding surface of 6" and tapers from ³⁄₄" wide to ⁵⁄₁₆" wide at the tip. Sold as a set of 6 in the grits 6/0, 4/0, 3/0, 2/0, 1, and 2. Used dry. Made in India.