high quality spring-balancer 5-7kg 9-10kg 15-22kg
| Serial number | model | Range | cable travel | weight |
| 1 | EW-3 | 1-3 | 1.5 | 1.6 |
| 2 | EW-5 | 3-5 | 1.5 | 1.8 |
| 3 | EW-9 | 5-9 | 1.5 | 4.2 |
| 4 | EW-15 | 9-15 | 1.5 | 4.4 |
| 5 | EW-22 | 15-22 | 1.5 | 8 |
| 6 | EW-30 | 22-30 | 1.5 | 8.5 |
| 7 | EW-40 | 30-40 | 1.5 | 10.5 |
| 8 | EW-50 | 40-50 | 1.5 | 11 |
| 9 | EW-60 | 50-60 | 1.5 | 11.8 |
| 10 | EW-70 | 60-70 | 1.5 | 12.5 |
| 11 | EW-80 | 70-80 | 1.5 | 12.5 |
| 12 | EW-100 | 80-100 | 1.5 | 20 |
| 13 | EW-120 | 100-120 | 1.5 | 21 |
| 14 | EW-140 | 120-140 | 1.5 | 22 |
