Cast iron dressing units complete with a bearing assembly and the dressing wheel of your choice.  These are used with surface grinders to dress abrasive grinding wheels, and super abrasive wheels like diamond and CBN borazon products.  Product dimensions are 3" (height), 2-1/8" (width), 2-7/8" (length).  For use with NR-20, NM-24, NF-36 silicone carbide dressing wheels and NSC-5 cutters.  Also ND1-46 and ND2-46 silicone carbide dressing wheels when dressing super abrasive wheels.  Replacement #100 bearing assemblies and dressing wheels are available upon request.  Brands that we offer are Newman, Desmond, and our own private label.