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Chain Ring Box Cosine ( formally Box 2 ) 4 Bolt
| BCD | 104mm |
| 02. MATERIAL | 6061-T6 Aluminum |
| 03. ORIGIN | Made in USA |
| 04. THICKNESS | 3.5mm |
| 05. 38 TOOTH | 73 grams / 2.57 ounces |
| 06. 39 TOOTH | 78 grams / 2.75 ounces |
| 07. 40 TOOTH | 79 grams / 2.78 ounces |
| 08. 41 TOOTH | 84 grams / 2.96 ounces |
| 09. 42 TOOTH | 87 grams / 3.07 ounces |
| 10. 43 TOOTH | 90 grams / 3.17 ounces |
| 11. 44 TOOTH | 92 grams / 3.25 ounces |
| 12. 45 TOOTH | 96 grams / 3.38 ounces |
