Exploded view of our 40mm Clamp, all of our clamps share similar design. Instead of long grove or channel design like Really Right Stuff, Kirk, Wimberley we use twin post to stabilize clamp with it provides less play and is more stable. We welcome anybody that would like to do side by side comparison.
These Quick-Release clamps are available at our store for $55/each with free shipping:
Or the bigger 60mm clamps for $69/each with free S&H:
Of course you can buy them with whichever thread you like, so they can be an essential part of your photography equipment.