The Rubber Grommets are used in the holes where there is no spike present. Â
- Â Wheel #23 Â 12 Rubber Grommets Included
| Wheel #23 | Spacing | # of Spikes |
| 8-inch | 12 | |
| 16-inch | 6 | |
| 22-inch | 4 | |
| 28-inch | 3 | |
| 40-inch | 2 | |
| 77-inch | 1 |
2. Wheel #26  18 Rubber Grommets Included
| Wheel #26 | Spacing | # of Spikes |
| 6-inch | 18 | |
| 12-inch | 9 | |
| 17-inch | 6 | |
| 31-inch | 3 | |
| 45-inch | 2 | |
| 86-inch | 1 |
3. Wheel #30 12 Rubber Grommets Included
| Wheel #30 | Spacing | # of Spikes |
| 10-inch | 12 | |
| 19-inch | 6 | |
| 27-inch | 4 | |
| 35-inch | 3 | |
| 51-inch | 2 | |
| 98-inch | 1 |