$ 139.95
This is Petzls' offering to you climbers that like setting your system away from you. Be it ZigZag, Unicender, Hitchclimber etc.
If you're not sure why you'd want to do this, it's to allow you pull on the rope coming out the bottom of your device. The benefits of this is that you never have slack in your rope while ascending and it's easier than hauling yourself up, then holding on for dear life while you tend the slack through. Then when you've had enough ascending, you adjust your bridge in so you can start work with your system in its normal position.
The cool thing about this adjustable bridge is that it mounts directly on to the lower D's of the Petzl Sequoia harness and minimises the clutter, unlike some other methods that are around.