The Magnaflux® 10lb Y-1 Yoke Test Weight is made out of composite steel and designed specifically for use with the Magnaflux® Y-1 Yoke. It provides balanced weight distribution and comes with a built-in leg positioning guide to assure accurate test results every time. Each weight measures 9’’ x 2’’ x 2’’, is individually serialized and comes with a certificate stating that it meets ASTM E1444.