Lighten your underwater photography rig with the Helium 0.5-Pound Double Ball Buoyancy Arm from ULTRAMAX. This 8 x 3" float arm delivers 0.5 pound of lift. Made of corrosion-resistant anodized aluminum, the arm is equipped with 1" mounting balls for integration into your strobe arms.

8" Long    Provides 0.5 Pound of Lift    1" Ball on Each End

Related Questions and Answers

Q: 1. My mount is cem26 and the diameter of the counterweight shaft is 20mm. Does this counterweight fit?

A: Yes. The iOptron 3-Pound Counterweight is compatible with the iOptron CEM26 mount.

Q: 2. Is it compatible with the Godox AD200 Pro?

A: No, the ULTRAMAX helium underwater strobe housing is designed and made for the AD200 unit.

Q: 3. From the photo, it looks like there is a "step" inside the counter weight hole. Is the .8" diameter measurement the wider part or the narrower part of the hole?

A: The image is the same image that is on the iOptron website. There is no step.

Q: 4. can you attach it to a hot shoe on top of a dslr or mirrorless camera?

A: This product offers 1/4"-20 screws on both ends which is better suited for mounting to 1/4"-20 threads such as ones present on a camera cage.

Q: 5. Is it made of aluminum or steel?

A: The SmallRig Double Ball Head with Cold Shoe & 1/4"-20 Stud is made of an aluminum alloy plus stainless steel.

Q: 6. Does the 1/4" - 20 have anti spin pins?

A: No, the Ultralight Cinema Double 5" Arm Package (1/4"-20 to 3/8"-16) has no Anti-twist locking pins.

Q: 7. What is the weight capacity?

A: The Kondor Blue 5.5" Cine Magic Arm with Double Ball Heads (3/8"-16 ARRI, Raven Black) has a weight capacity of 25lbs per ball joint.

Q: 8. Does it float or sink ?

A: The Buoyancy on the ULTRAMAX Helium Underwater Strobe Housing for Godox AD200 Flash is Slightly Negative. So, it will sink.

Q: 9. Can I place my Aputure 120D ii on it with the light dome?

A: The combined weight of the Aputure Light Storm LS C120D II LED Light and the Aputure Light Dome II (34.8") is 10.44 lbs (4.7 kg). The Matthews 20" Double Riser C-Stand has a maximum load capacity of 22 lbs, so yes, the light fixture and light dome may be supported by the Matthews 20" Double Riser C-Stand. The Matthews Hollywood Gobo Arm - 20" is not a boom arm, and Matthews does not list a maximum load capacity for the grip arm. You may purchase the Kupo Baby 5/8" Grip Arm Pin, B&H # KUKG002212, to use the Aputure Light Storm LS C120D II LED Light on the gobo arm, but it may not support the weight of both the LS C120D II and the Light Dome II together.

Q: 10. Can the cold show mount be removed and used as 1/4"?

A: There is actually a 1/4"-20 thread under the cold shoe already. If you would like to mount this to something that also has a 1/4"-20 thread a basic spigot adapter would be the safe choice. https://bhpho.to/2TIsCA9