Zacuto Bi-Mount - Zube and Double Z-Release has been discontinued, here are some related products you might like:
The Zacuto Double Z-Release is an accessory that gives you two Zacuto Z-Release quick-release mounts for attaching a Zamerican articulating arm, ZUDs (for adapting existing articulating arms that use a 3/8" 16 or 1/4" 20 mount), and/or standard 15mm rods. The Double Z-Release works in conjunction with either a Zube or ZicroMount III.
(2) 15mm Quick-Release Mounts
Attaches Articulating Arms or 15mm Rods
Joins to Zube or Zicromount III
More information about Zacuto Products (Link to Zacuto Website)