| نموذج | 
[بروسسّ كبستي]
 ([م] ³ [/ه])  | 
طول ([م]) | ||
| 0° | 15° | 30° | ||
| [ولس-260] | 3 | 2.1 | 1.3 | ≤ 12 | 
| [ولس-320] | 6 | 4.5 | 2.5 | ≤ 15 | 
| [ولس-360] | 9.5 | 6.5 | 4.3 | ≤ 20 | 
| [ولس-400] | 11 | 8.5 | 5.7 | ≤ 25 |