test weights 1 Material: cast iron, stainless steel, brass 2 Class: M1,M2,M3,E1,E2,F1,F2 3 ... , F1, F2, M1, M2.4. Material: Cast iron, stainless steel, brass.5. Sand blasted.6. Produce could be manufactured according to ... clients' drawing.7. OE M sevice is available grip handle cast iron test weights