 |
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| N = NATURAL | |||
| W = WOOD | |||
| S = SYNTHETIC | |||
| slips |  |
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| box | |
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| Stretch | |
||
| 10-20 | |
|
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| 20-30 | |
|
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| 30-40 | |
|
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| 40-50 | |
|
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| 50-60 | |
|
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| 60-70 | |
|
|
| 70-80 | |
|
|
| 80-90 | |
|
|
| 90-100 | |
|
|
| 100+ | |||
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|
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| F2a |
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| F2B |
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