| Model. | Colour Code. |
Gear Dia (mm). |
Teeth per cm. |
Worm Dia (mm). |
Worm Teeth. |
Length (mm). |
Drive Pinion code. |
Drive Pinion teeth. |
| RD 250 B | Green | 31.50 | 7 | 15.30 | 9 | 11 | 280 | 22 |
| RD 250 C | Royal blue | 31.50 | 7 | 15.30 | 9 | 11 | 1AO | 22 |
| RD 250 D | Royal blue | 31.50 | 7 | 15.30 | 9 | 11 | 1AO | 22 |
| RD 250 E | Royal blue | 31.50 | 7 | 15.30 | 9 | 11 | 1AO | 22 |
| RD 250 F | Royal blue | 31.50 | 7 | 15.30 | 9 | 11 | 1AO | 22 |
| RD 350 A | Red | 34.00 | 5.5 | 13.30 | 9 | 13 | 21 | |
| RD 350 B | White | 34.00 | 5.5 | 13.30 | 9 | 13 | 21 | |
| RD 400 C | Sky blue | 34.00 | 5.5 | 13.30 | 9 | 13 | 1A1 | 21 |
| RD 400 D | Sky blue | 34.00 | 5.5 | 13.30 | 9 | 13 | 1A1 | 21 |
| RD 400 E | Pink | 33.40 | 4 | 14.00 | 7 | 14 | 1A1 | 21 |
| RD 400 F | Pink | 33.40 | 4 | 14.00 | 7 | 14 | 1A1 | 21 |