Rockers are (7 inches long) including the stained birch handle and made with the highest quality high carbon tool steel, EC Lyons rockers are known world wide as the finest mezzotint rockers available.
By working the rocker (with a rocking motion) over a copper/zinc plate in a criss-cross fashion one creates burrs that will trap the ink to produce rich velvety black tones unequaled in any other intaglio process.