Internal
Ring Sizes
| Aluminium | Stainless Steel | L&M |
| A – 2.40mm | – | |
| B – 2.60mm | – | |
| C – 2.70mm | – | 7/64 |
| D – 2.90mm | – | |
| E – 3.10mm | – | |
| G – 3.30mm | – | |
| J – 3.50mm | – | 9/64 |
| K – 3.80mm | – | |
| KA- 3.81mm | – | |
| KB- 3.98mm | – | |
| L – 4.20mm | – | 5/32 |
| M – 4.50mm | 4.50mm | 3/16 |
| MA- 5.00mm | – | |
| N – 5.50mm | 5.50mm | 7/32 |
| P – 6.00mm | 6.00mm | |
| R – 7.00mm | 7.00mm | #9 |
| S – 7.5mm | 7.5mm | #9.5 |
| SA – 8mm | 8.00mm | #10 |
| T – 9.00mm | 9.00mm | #11 |
| U – 10.00mm | 10.00mm | #12 |
| V – 11.00mm | 11.00mm | #14 |
| W – 13mm | 13.00mm | #16 |
| WA 14.00mm | 14.00mm | – |
| X – 15.00mm | 15.00mm | #18 |
| Y – 16.00mm | 16.00mm | #20 |
| Z – 20.00mm | 20.00mm | #24 |
| Z1- 21.00mm | 21.00mm | – |
| Z2- 22.00mm | 22.00mm | – |
| Z3- 23.00mm | 23.00mm | |
| Z4 – 24.00mm | 24.00mm | |
| Z5 – 25.00mm | 25.00mm | |
Ordering For A Club Or Society?
Please feel out the form below and we will get in touch.