Specifications
| Backing Ring - Table D Models | 40mm or 50mm or 63mm or 75mm or 90mm or 110mm or 125mm or 140mm or 160mm or 200mm or 250mm or 315mm |
| Backing Ring - Table D Models | 40mm or 50mm or 63mm or 75mm or 90mm or 110mm or 125mm or 140mm or 160mm or 200mm or 250mm or 315mm |