Easily equip your underwater photography setup with strobes, video lights, or other accessories with this 16" Ultralight Double Ball Arm 16 Inchfrom Ultralight Control Systems. The arm is made of 6061 aluminum with a Type III hard-anodized finish to resist corrosion. The length of the arm is measured from the center of the O-ring on each ball.

Arm for Underwater Strobes/Accessories    1" Ball at Each End    Type III Hard-Anodized Aluminum

Related Questions and Answers

Q: 1. 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: 2. Recommended weight to support?

A: There is no weight rating available from the manufacturer for the Kupo Sidearm with Baby Pin/Receiver. The strenght of the stand, the exact placement of the offset arm on the riser, as well as counterbalancing the offset load will all ultimately determine how much weight the offset arm can support.

Q: 3. Is this ballhead compatible with the SmallRig ballhead series, and the SmallRig ballhead clamp (P/N 2134) in particular?

A: No it is not compatible with Smallrig ball head products.

Q: 4. How long is this sidearm?

A: The manufacturer does not list the length, but the retail packaging it comes in is about 20".

Q: 5. What does "side-mounted" mean?

A: The Ultralight Side-Mounted ARRI Ball Adapter has its 3/8 screw mounted at a 90 degree angle. Please see the image below. Image - https://bit.ly/3V30feU

Q: 6. Is this compatible with SmallHD's proprietary locating pins?

A: Yes, the Wooden Camera Universal Ultra Arm Ball (Combo 1/4-20 & 3/8-16) would be compatible with SmallHD locating pins.

Q: 7. Are the baby pins removable? They seem to have a drilled hole for fitting a tool through.

A: The pins on the Kupo Adjustable Twin Baby Side Arm (15") are not made to be removed.

Q: 8. Can the ⅜”x16 stud be removed so that the ball mount has a ⅜”x16 female threaded receiver? Does the stud have a hex head end?

A: You can get this version instead which has a 3/8-16 female:: https://bhpho.to/2LJyzMF

Q: 9. are there are some other similar options?

A: There is this one that is like but not exactly like the Kupo Baby 5/8" Side Arm (Chrome-plated), Matthews Heavy Duty Baby Side Arm, BH #MASABHD • MFR #429752, https://bhpho.to/3cQWhnv

Q: 10. Will the pins on the 1/4-20 side fit the smallHD anti-twist hole spacing?

A: Regarding the SmallRig Magic Arm with Dual Ball Heads (1/4"-20 and 3/8"-16 ARRI Locating Screws), yes, the pins on the 1/4"-20 side fit the SmallHD anti-twist hole spacing.