head collar ring made of malleable cast iron with 3 loops for 25mm wide webbing - 1 piece head collar ring made of malleable cast iron with 3 loops for 25mm wide webbing - 1 piece Product detailsManufacturer Product details Head collar ring with 3 loops, made of malleable cast iron, nickel-plated Inner diameter of the loops: 25mm, Thickness of head collar ring: 6mm Manufacturer