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Connection diagrams of control units for rally and circuit systems and compatibility tables of connectors and adapters.
| Centimeters | Generic Sizes | Hat Size |
|---|---|---|
| 51 | 4XS | 6 3/8 |
| 52 | 3XS | 6 1/2 - 6 5/8 |
| 53 | ||
| 54 | XXS | 6 3/4 - 6 7/8 |
| 55 | ||
| XS | 7 | |
| 56 | ||
| 57 | SML | 7 1/8 - 7 1/4 |
| 58 | ||
| MED | 7 1/4 - 7 3/8 | |
| 59 | ||
| 60 | LRG | 7 1/2 |
| 61 | ||
| XLG | 7 5/8 - 7 3/4 | |
| 62 | ||
| 63 | XXL | 7 7/8 - 8 |
| 64 | ||
| 65 | 3XL | 8 1/8 - 8 1/4 |
| 66 | ||
| 67 | 4XL | 8 3/8 - 8 1/2 |
| 68 | ||
| Centimeters | Generic Sizes | Hat Size |
|---|---|---|
| 54 | XXS | 6 3/4 - 6 7/8 |
| 55 | ||
| XS | 7 | |
| 56 | ||
| 57 | SML | 7 1/8 - 7 1/4 |
| 58 | ||
| MED | 7 1/4 - 7 3/8 | |
| 59 | ||
| 60 | LRG | 7 1/2 |
| 61 | ||
| XLG | 7 5/8 - 7 3/4 | |
| 61+ |
