| Collar and Couplings Part Number | Description |
| 2CFM-6-6 | 6 x 6 Metric Double Split Black Oxide Steel No Keyway |
| 2CFM-8-8 | 8 x 8 Metric Double Split Black Oxide Steel No Keyway |
| 2CFM-9-9 | 9 x 9 Metric Double Split Black Oxide Steel No Keyway |
| 2CFM-10-10 | 10 x 10 Metric Double Split Black Oxide Steel No Keyway |
| 2CFM-12-12 | 12 x 12 Metric Double Split Black Oxide Steel No Keyway |
| 2CFM-14-14 | 14 x 14 Metric Double Split Black Oxide Steel No Keyway |
| 2CFM-15-15 | 15 x 15 Metric Double Split Black Oxide Steel No Keyway |
| 2CFM-16-16 | 16 x 16 Metric Double Split Black Oxide Steel No Keyway |
| 2CFM-20-20 | 20 x 20 Metric Double Split Black Oxide Steel No Keyway |
| 2CFM-25-25 | 25 x 25 Metric Double Split Black Oxide Steel No Keyway |
| 2CFM-30-30 | 30 x 30 Metric Double Split Black Oxide Steel No Keyway |
| 2CFM-35-35 | 35 x 35 Metric Double Split Black Oxide Steel No Keyway |
| 2CFM-40-40 | 40 x 40 Metric Double Split Black Oxide Steel No Keyway |
| 2CFM-50-50 | 50 x 50 Metric Double Split Black Oxide Steel No Keyway |
