size | Diameter mm/line | Ball Bearing | Weight g/oz | Gear Ratio |
3/4 | 70/2.76 | 2+1 | 120/4.23 | 1:1 |
5/6 | 80/3.15 | 2+1 | 140/4.94 | 1:1 |
7/8 | 90/3.54 | 2+1 | 165/5.82 | 1:1 |
9/10 | 100/3.94 | 2+1 | 175/6.17 | 1:1 |



size | Diameter mm/line | Ball Bearing | Weight g/oz | Gear Ratio |
3/4 | 70/2.76 | 2+1 | 120/4.23 | 1:1 |
5/6 | 80/3.15 | 2+1 | 140/4.94 | 1:1 |
7/8 | 90/3.54 | 2+1 | 165/5.82 | 1:1 |
9/10 | 100/3.94 | 2+1 | 175/6.17 | 1:1 |