Yep I just looked at it myself....the dbz anchor talked about in the advanced rigging section is made by Hilti and I see them in Hilti's Australian site but not in the U.S. site.
http://www.hilti.com.au/holau/modules/p ... E_OID=9649
Email from Hilti---
The DBZ wedge anchor is not stocked as a
standard item in the States. This may be something we can special order
from Europe. The lead time would be approx 4 to 5 weeks. If you are
interested please contact our Inside Sales and Service Team at
800-879-8000, Thanks again-Jeni