Among the many products and accessories by which Sigalsub is known, surely the quality of their elastic bands is one of those. Divided into Reactive and Extreme, the line is complete with diamters that go from 14.5, 16, 17.5 and 19 for the reactive, while we also find in addition the 13 mm diameter for the Extreme. now differently from what the name can indicate, the Reactive gives a smoother and longer push to the shaft, while the Extreme is more explosive.
A nice chart below can indicate the specific characteristics of the two types of rubber and the elongation coefficient giving best performance.
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| Type | Diameter (mm) | Suggested Elongation | Max elongation |
| Reactive | 14.5 | 320-340% | 350% |
| Reactive | 16 | 310-340% | 360% |
| Reactive | 17.5 | 290-320% | 380% |
| Reactive | 19 | 280-300% | 380% |
| Extreme | 13 | 320-340% | 350% |
| Extreme | 14.5 | 320-340% | 360% |
| Extreme | 16 | 300-330% | 380% |
| Extreme | 17.5 | 280-310% | 400% |
| Extreme | 19 | 270-300% | 400% |
