Ball hook(power line hardware) Ductile Iron- Gr. 60-40-18, ... -12, 80-55-06 Brass- C38000, C37000, C37700, C84400 ISO9001: Ball hook(power line hardware)ZD is proud to offer products ... produced are:ASTM A 128 Gr.A, Gr.B, Gr.C, Gr.EHeat resistant steel*Green sand*Olive sand*Polymer sand ... the material specialties listed above, pls contact our Sales Department. Ball hook(power line hardware)