| 90/10 Catalogue | Nominal Bore Catalogue | ||
| Class of Fitting | EEMUA metric range | ANSI B16.9 / NB Range (imperial) | |
| 'O'Lets | Reinforced forged branch connections | Branch specified outside diameters 16mm to 610mm in 16 or 20 Bar specification | |
| Sockolets | Sockolets 16mm to 108mm | 1/4" NB to 4" NB 3000 lb Class | |
| Reducing 'O'lets | Supplied for standard weight and 3000 lb Class | ||
| Threaded 'O'lets | Threaded in 1/2" to 2" NPT size | Class 3000 lb fittings with run sizes from 1/2" to 36" | |