Three Angle Bosshead
Due to its strength, suitable for multilevel and three dimension constructions.
| Material | d/Ø | Thread | Angle | 
| Duraluminium | 9-13 | 4 | 90 + 180 + 270 | 
| Duraluminium | 19-23 | 4 | 90 + 180 + 270 | 
 
                						