D - Cup Outer Diameter | 
                                                                        N/A 7-1/8 in180.975 mm | 
                                                                                D1 - Flange Outer Diameter | 
                                                                        N/A 7.4022 in188.016 mm | 
                                                                                C - Cup Width | 
                                                                        N/A 1 in25.4 mm | 
                                                                                C1 - Cup Flange Width | 
                                                                        N/A 0.2813 in7.145 mm |