These Steel doming blocks are used by jewelers & metal Smiths. Solid steel heavy duty, heat treated & hardened to last you for a lifetime.This product in display is Steel Dapping Block Round Shaped Cavities, which is used to form various shapes with flat sheets of soft metal or bendable material. Made of High carbon steel .It great for jewelers and hobbyists. The dimensions are 1 x 1 x 1 inch (2.5 x 2.5x 2.5 cm ) .PLEASE CLEAN AND APPLY OIL BEFORE USE. Note: Remember to wear eye protection. Note: Photographs are for illustration purpose only. Actual item may slightly differ from the pictures shown.Scorpion is committed to providing the customer with the best source for value possible on the market. You will enjoy the quality, function and usefulness of our products.