Iver johnson choke tube.410 improved cylinder mobil choke Other Features: Mobil choke style threads
Specifications:
| Thread Pattern | Mobil |
| Material | Steel |
| Flush Or Extended | Flush |
| Choke/id | Improved Cylinder |
| Gauge | .410 Bore |
| Dimension | 0.70 X 0.70 X 2.20 |
