This Ball Clamp with T-Knob from Ultralight is used to connect the Ultralight 2" buoyancy arms to your underwater camera housing rig. This clamp measures 2" between the centers of the ball recesses and is built around a 1/4"-20 coarse threaded bolt. The splashy red anodized T-knob makes tightening and loosening the clamp easy, and it can be useful to the cinema industry for color-coding camera rigs.

Anodized T-Knob    Useful for Color-Coding Camera Rigs    2" Center to Center    1/4"-20 Coarse Thread Bolt

Related Questions and Answers

Q: 1. Does this come with an arca type QR plate?

A: No, i'm sorry this head does not come with a plate. Please click the link below to view some possibilities; https://bhpho.to/2MPa6UH

Q: 2. Comparing this ball head to the smaller FB-44III ball head (BH #SUFB44III) shows this has a lower load capacity (44 lb vs 66 lb). Is this correct? Shouldn't this larger version have the greater load capacity?

A: While it may seem the FB-52 should have a larger maximum load capacity, according to Sunwayfoto's website, the Sunwayfoto FB-52 Ball Head has a maximum load capacity of 20 kg, which is 44.1 lbs. The Sunwayfoto FB-44III Ball Head has a maximum load capacity of 30 kg, which would be 66.1 lbs. If you need more assistance, you may contact Sunwayfoto directly by e-mailing them at service@sunwayfoto.com.

Q: 3. How is this screw know compared to the lever clamp?

A: The screw and the lever are personal preferences, beyond that some users like the lever when they are shooting in cold weather and wearing gloves. The lever is much easier to use with gloves and is also quicker.

Q: 4. Will this work with the peak design pro plate?

A: Yes, it will.

Q: 5. Will the screw knob interfere with a fold down lcd screen on the D850?

A: Typically not, but if for some reason you are experiencing this issue, just turn the camera around. You can orient the camera on its L-bracket/plate with the screw knob facing forward/under the lens rather than behind the camera.

Q: 6. Is anyone using this on a Gitzo GT2545T(Series 2 Traveler)? Or too big for the tripod?

A: If you are serious about photography, this is a very good ball head. I like it very much. Of course, when you are searching this ball head, I assume you have a good tripod too, not something wobbly cost $100 level

Q: 7. does this head fit manftrtto 190cxpro4 tripod?

A: This head will fit the 190CXPRO4, but the base of the head will hang over the base of the tripod.

Q: 8. Does this truly pan 360 degrees or is panning achieved only by movement of the ball?

A: The BH-25 will pan by the movement of the ball head. The BH-30 will have a seperate panning lever. See: https://bhpho.to/2yDP42r.

Q: 9. Can this be use on Robus RC-5570 Vantage Series 3 Carbon Fiber Tripod ?

A: Yes, it is compatible with the Robus 5570.

Q: 10. Will the FB-52 handle a Nikon D300s with battery pack and 400 F3.5 Nikkor lens?

A: Yes, it handles up to 44lbs, more than enough to handle this kit well.