Swivel tips have ball-jointed swivel heads to compensate for minor misalignment, and to eliminate marking of the work surface.  They are all machined from Class 2 alloy bar stock.

The S-Series tip water hole does not reach the head.  In the OS and OSH models, the water does contact the head and O-rings are used to seal it.

Class 1 and Class 3 heads are also available.