Q-Tubes Thorn Resistant tubes feature 4mm thick butyl rubber in the tread area tapering to 2mm sidewalls.
| Weight | 475 |
| Valve | Standard Schrader |
| ISO Diameter | 406 / 20″ BMX |
| ISO Width | 40 |
| ISO Width | 41 |
| ISO Width | 42 |
| ISO Width | 43 |
| ISO Width | 44 |
| ISO Width | 45 |
| ISO Width | 46 |
| ISO Width | 47 |
| ISO Width | 48 |
| ISO Width | 49 |
| ISO Width | 50 |
| ISO Width | 51 |
| ISO Width | 52 |
| ISO Width | 53 |
| ISO Width | 54 |
| ISO Width | 55 |
| ISO Width | 56 |
| ISO Width | 57 |
| Labeled Size | 20 x 1.75-2.125 |
| Flat Protection | Thorn Resistant |
| Flat Protection | Variable Wall Thickness |
| Wall Thickess | 4 |
| Shaft Type | Smooth |
