This 3" Wooden Camera Universal Ultra Arm 1/4-20 & 3/8-16 (3")from Wooden Camera Universal Ultra Arm 1/4-20 & 3/8-16 (3")is a strong articulating arm for attaching accessories to your camera or rig. It has four points of articulation so you can precisely position your device, and a center arm that features one 3/8"-16 and two 1/4"-20 threaded mounting holes for additional accessory mounting.

The Ultra Arm features interchangeable mounting screws, so you can attach it to either 1/4"-20 or 3/8"-16 mounting surfaces and mount 1/4"-20 and 3/8"-16 accessories on the arm. In addition, included removable anti-twist divots allow you to securely lock this arm to compatible accessories to prevent it from twisting unexpectedly. Changing the mounting knobs is a simple task; simply depress the brass locking pin, allowing the knobs to be swapped out. The arm features four 25mm balls, providing the four-points of articulation, and two locking levers that clamp the armature on the ball, holding the position you set.

4 Points of Articulation    Interchangeable Mounting Knobs    Removable Anti-Twist Pins    1/4"-20 and 3/8"-16 Center Threads    Compatible 25mm Ball System

The included 1/4"-20 and 3/8"-16 knobs and removable anti-twist pins allow you to use the arm with the most common mounting threads

The arm is compatible with third-party 25mm ball systems

Related Questions and Answers

Q: 1. Is this ballhead the same size as Kondor Blue's?

A: Both the Kondor Blue and Wooden Camera Ultra Arm Ball are standard 1" ball size and compatible.

Q: 2. It says that you need an Arca-Swiss plate to use with it. I will be using an Oben ac-1410 tripod. Can you refer me to what plate would be best to order?

A: Depending on the telephoto lens that you are using, different lengths of Arca-Swiss plates will be appropriate to attach. The following chart will show you which Wimberly (another maker of gimbal heads that use Arca-Swiss releases) plate will support your lens best. Just type in the model number of the specific plate into our search bar. (example: P10 plate)http://bhpho.to/1aJndNaorClick the link in the description of this product:B&H # WITHQRQ ? Mfr # WH-200

Q: 3. Just received my jobu jr3 and Desmond dpl-115 plate. The clamp on jobu bottoms out on itself and does not tighten on the plate. The V grooves on the plate are too big. Which brand plate will fix this problem.

A: For this inquiry, please e-mail us directly to prophoto@bhphotovideo.com along with the lens that you own for reference. Thank you.

Q: 4. It seems Wooden Camera has a v2 variant of this. I don't see it on your site, is this in fact the v2 variant?

A: The Wooden Camera Universal Ultra Arm with Combo 1/4-20 & 3/8-16 (3")(BH #WO278900 • MFR #278900), would be listed as the Universal Ultra Arm v2 (Combo 1/4-20 & 3/8-16) on the Wooden Camera website, so this is the V2 variant.

Q: 5. I want to use this with the Canon 100-400 IS I. Do I need an extra less Plate? If so which one would you recommend?

A: Hi There,Yes, you will need an ARCA Swiss plate for this Gimble.Now, this is a good question what kind of plate you need and I can not specifically tell you since I have no such lens to try on my gimble.But I can give you some guidelines:You have a tripod leg for that lens and it has its size. I also assume that it is a fairly short leg with only one screw mount in it.Now, if you are looking for the aesthetic point of view you might be considering an ARCA plate with same length like your lens leg, but if you want to be able to play with the balance fo the camera + Lens in the gimble, I recommend you to buy a little longer plate. This will allow you to slide the plate on the gimple to find the balance position . A balance position is a position where the camera mounted on the gimble is staying balanced hands free . I know it doesn't sounds like a big deal but believe me it is more than just a nice to have .Another important point is that the plate will have the limiters both sides. Those limiters are small screws that are stopping the plate to slide off the gimble (look at the gimble image - where you put the plate - it has like two canals, one in each side).Now the next question is which plate brand should you buy. for this I have no sharp answer. I think that the brand is less important here unless it is really cheap and you fill like it is going to be unsafe to use.I have bought the below P50 plate but it was for a much bigger lens with much bigger leg.You can also see in that one that there is a screw hole at the end of the plate for the stopper/limmiter.And also make sure you are using the correct thread for your lens (1/4 or 3/8 ). if needed buy also an adapter.Hope it helps.Enjoy,Guy

Q: 6. Can this be used with Nikon D7100 and the Tamron 150-600 lens?

A: My D810 with MB-D12 and Nikon 200-500mm live on this thing. It's rock solid and works flawlessly.

Q: 7. What's the weight capacity?

A: There isn't a specific weight limit from Wooden Camera, but through testing I would say less than 3 lbs.

Q: 8. It says compatible with most Arca Swiss plates. My Olympus 300 PRO has the Arca Swiss dovetail machined in the lens collar foot. Is this gimbal clamp compatible with my lens?

A: Yes the Jobu clamp on the gimbal is Arca compatible.

Q: 9. Is this compatible with the SmallRig Magic Arm with Dual Ball Heads (1/4"-20 Screws)?

A: The Wooden Camera Ultra Arm Ball with Female Cold Shoe is designed to work with Wooden Ultra Arms. We suggest working with the Camvate shoe below to add a shoe to the SmallRig Magic Arm with Dual Ball Heads (1/4”-20 Screws) BH #SM3873 CAMVATE Cold Shoe Mount with 1/4"-20 Thread BH #CAC1347

Q: 10. Has anybody used this with a Nikon d300, battery pack, and 400mm 3.5 with teleconverter? Weighs a little under 10lbs.

A: Not your specific configuration, but I have been using it with a Canon 7Dii camera and a 100-400mm lens and also with a Tamron 150-600. The only problem I have had is the balance when I change from 100 to the full reach, but that should be expected; I just modify the balance arrangement and it works fine. I plan on using the camera with a rented 500mm in June. So far, I have been very pleased with this gimbal head.