ZJ13 Ball Joint Clamp

The OrcaTorch ZJ13 is a small connector doing a big job: it's the piece that turns a loose collection of arms, trays, and lights into one rigid photography rig. Built from aluminium with an aluminium knob nut, it clamps onto standard ball joint arms and locks them in place at whatever angle your shot needs.

At 78 grams, the ZJ13 adds negligible weight to a camera setup, which matters when you're already carrying a housing, strobes, and one or more focus lights. Compatibility runs wide across standard aluminium ball joint systems, so it isn't locked into a single manufacturer's ecosystem the way some proprietary mounts are. That flexibility is the real value here: buy once, and it'll likely outlast several generations of light or camera upgrades.

Use it to attach a dive light to a tray, join two arm segments at an angle, or build out a multi-light rig for video work. The knob nut tightens by hand, no tools required, so adjustments between dives or mid-shoot take seconds rather than minutes.

It's not a glamorous purchase. It's the fitting that keeps the rest of your rig from falling apart at 20 metres, which is exactly the kind of gear gap most divers don't notice until it fails.

Compatible with: standard aluminium ball joint arms and trays; pairs with most OrcaTorch dive lights and third-party camera arm systems.