Cup Part Number:34478RB; Series:34000; Design Units:Imperial; D:4.7812 in; Da - Cup Frontface Backing Diameter:4.60 in; e - ISO Factor2:0.45; r - Cup Backface To Clear Radius1:0.08 in; Y - ISO Factor3:1.33; Cg - Geometry Factor:0.109; Db - Cup Backface Backing Diameter:4.33 in;