Add this durable Magic Arm with Dual Ball Heads from SmallRig to your rig to mount and adjust monitors, viewfinders, lights, mics, and other accessories. It features dual ball heads and 1/4"-20 screw mounts with tightening thumbwheels and anti-twist locating pins on each end. This lightweight aluminum and stainless steel arm has a load capacity of 12 lb. Each ball mount features a silicone gasket to add grip and friction to the mount when adjusting position, and both are tightened with a center locking lever. A magnetic wrench is included to help tighten the thumbwheels.
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Key Features
- 4.7" Arm with 2 Ball Heads
- For Monitors, Viewfinders, Lights & More
- 12 lb Load Capacity
- 1/4"-20 Screws on Each End
Add this durable Magic Arm with Dual Ball Heads from SmallRig to your rig to mount and adjust monitors, viewfinders, lights, mics, and other accessories. It features dual ball heads and 1/4"-20 screw mounts with tightening thumbwheels and anti-twist locating pins on each end. This lightweight aluminum and stainless steel arm has a load capacity of 12 lb. Each ball mount features a silicone gasket to add grip and friction to the mount when adjusting position, and both are tightened with a center locking lever. A magnetic wrench is included to help tighten the thumbwheels.
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SmallRig 3873 Overview
SmallRig 3873 Specs
| Load Capacity | |
| Top Mount | |
| Bottom Mount | |
| Points of Articulation | |
| Material of Construction | |
| Segment Length | |
| Width | |
| Weight |
Packaging Info
| Package Weight | |
| Box Dimensions (LxWxH) |
SmallRig 3873 Reviews
quick & easy
By Jonathan
Rated 5 out of 5
Date: 2025-12-10
exactly what i needed for quick set ups & adjustments on the go. Very happy.
Great attachment arm
By Michael
Rated 5 out of 5
Date: 2025-08-04
this think screws on tight and doesn't move around.
See any errors on this page?
Can i use smallrig clamps with this?
Can i use smallrig clamps with this?
The SmallRig Magic Arm with Dual Ball Heads (1/4"-20 Screws) is compatible with Smallrig crab clamps as long as you remove the locking pins.
Date published: 2023-10-09
Are the locator pins spring loaded and ...
Are the locator pins spring loaded and retractable?
Yes, the SmallRig Magic Arm with Dual Ball Heads (1/4"-20 Screws) locator pins will retract.
Date published: 2023-02-08
Ball head size? 20mm?
Ball head size? 20mm?
Correct, the ball portion of the SmallRig Magic Arm with Dual Ball Heads' (1/4"-20 Screws) ball heads is 20mm.
Date published: 2023-08-10
What is the difference between this product and ...
What is the difference between this product and the Smallrig Articulating Arm which is more expensive? BH #SM2070B
I cannot find a good indicator that differentiated the two to make the more expensive option better other than an easier handle to twist.
Date published: 2023-08-28