This is the 3330-16 100mm Leveling Bowl Adapter to 4-Bolt Flat Base from Vinten. It allows a pan/tilt head to be installed on a standard Vinten four-hole base. It is also used in conjunction with Vinten's Quickfix adapter.
Vinten3330-16 100mm Leveling Bowl Adapter to 4-Bolt Flat Base
Limited 1-Year Parts and Labor Warranty
Extended Warranty Available for up to 2-Years by Returning Registration Form or by Registering online at www.vinten.com