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| Model | Channel Diameter | Insertion Tube Diameter |
| EC-3470FK | 3.8 | 11.6 |
| EC-3470LK | 3.8 | 11.6 |
EC-3490Li | 3.8 | 11.6 |
| EC-3490LK | 3.8 | 11.6 |
| EC-3872LK | 4.2 | 12.8 |
| EC-3872LZK | 3.8 | 12.8 |
| EC-3872TLK | 3.8 & 2.8 | 12.8 |
| EC-3890Li | 3.8 | 13.2 |
| EC-3890LK | 4.2 | 13.2 |
| FC-38FV | 3.8 | 12.8 |
| EC-3890TLK | 3.8 & 2.8 | 13.2 |
| FC-38LV | 3.8 | 12.8 |