| abbr. | type of towball |
|---|---|
| H | undetachable towball – fixed with 2 bolts |
| B | detachable towball |
| VB | vertical detachable towball |
| P | flange ball |
| X | new type, data aren´t available yet |
| N | no visible cut |
| V | visible cut |
| O | no cutting |
| U | universal set – connection via cable connectors for rear lights wiring |
| CC | universal set with check control |
| SP | special electric set |
| GDW, CAN | universal set with check control and CAN – BUS |
| e | 94/20 EC approval according to the Euro Directive |
| E | EHK 55 approval |
| CZ | approval only for CR – Atest 8SD |