The P&C GB-1 GearBox sold out on it's first day, and a small second inventory has become available again today. If you're not sure what this is, you can check out the previous article (here).

If you already have the GearBox itself, you will be able to upgrade to the 15mm Rod system with the GB-R Kit. For those who want both in one purchase, there will be a GB-2 GearBox Bundle available on the website.

P&C GearBox - DSLR Cage Video Accessory Bracket