Outer Diameter | Ratio | Material | Bushing diameter | Motor Type | Voltage | Speed Ratio |
13MM | 1:16 | Metal | 1.5 | |||
14MM | 1:4 | Metal | 2.38 | |||
20MM | 1:16 | Plastic+Metal | 4 | carbon brush | 12 | 940 |
22MM | 1:107 | Metal | 8 | Brushless | 12 | 90 |
24MM | 1:96 | Plastic | 4 | Brushless | 12 | 44 |
28MM | 1:100 | Plastic+Metal | 8 | Carbon Brush | 12 | 93 |
30MM | 1:348 | Metal | 8 | Carbon Brush | 20 | |
36MM | 1:6.75 | Metal | 6 | 24 | 2030 | |
38MM | 1:22 | Metal | 8 | 12 | 800 | |
42MM | 1:235 | Metal | 10 | |||
45MM | 1:64 | Metal |