What thread for my machine?
| Model | Thread Size Range | Needle System |
|---|---|---|
| Class 4 | 69 to 415 | 7x4, 7x3, 794 |
| Class 3 | 69 to 346 | 7x4, 7x3, 794 |
| Class 26 | 46 to 207 | 135x16, 135x17 |
| Class 29 | 46 to 207 | 135x16, 135x17 |
| Class 17 | 46 to 92 | 135x16, 135x17 |
| Class 20 | 46 to 138 | 135x15, 135x17 |
| COBRA 5110 | 46 to 92 | 135x8 |
| COBRA 5550BB | 46 to 92 | 135x8 |
| COBRA 8810 | 46 to 92 | 135x8 |