| 1271 | Stopcock Straight bore Two-way PTFE/GLASS | |
| Bore of core(mm) | O.D.of side arm(mm) | Length of side arm(mm) |
| 2 | 8 | 120 |
| 4 | 8 | 120 |
| 6 | 10 | 120 |
| 8 | 12 | 120 |
| 10 | 14 | 120 |
| 12 | 17 | 120 |
| 1271 | Stopcock Straight bore Two-way PTFE/GLASS | |
| Bore of core(mm) | O.D.of side arm(mm) | Length of side arm(mm) |
| 2 | 8 | 120 |
| 4 | 8 | 120 |
| 6 | 10 | 120 |
| 8 | 12 | 120 |
| 10 | 14 | 120 |
| 12 | 17 | 120 |