The Manfrotto 173B Mini Boom Arm Only is made of black anodized aluminum, and is a boom arm only, with no swivel mount or counterweight. Provided with 5/8" stud with 1/4-20 and 3/8" threaded tips.

Comes with a 5/8" standard stud 1/4-20 tip on one end and 3/8" on the other.

Related Questions and Answers

Q: 1. What is the total actual height not just the 6-12" adjustment?

A: The K&M Tablet Stand with Boom Arm (Black), B&H # KM19789B, has a maximum height of 64 inches.

Q: 2. This boom arm was suggested by B&H. I need a versatile system that will hold Buff Einstein and medium soft box with no problem?

A: If the combined weight of your equipment weighs less than 13.2 lbs (6 kg), then yes, the Manfrotto Heavy Duty Boom Arm, Black - 9' (2.7m) would work for use with your equipment.

Q: 3. Can you attach a tripod head to this?

A: Yes, one would typically use either of these two items to attach a ball head to the boom: Kupo Baby Ball Head Adapter (B&H# KUKG014212) https://bhpho.to/3fYao98 Matthews Baby Ballhead Adapter (B&H# MABBHA) https://bhpho.to/3CJII1x

Q: 4. Will this work atop a Manfrotto 5001 stand with the 124 clamp?

A: The 5001B stand is way too small to securely support a boom arm, pivot clamp, and whatever you are going to put on the end of the arm. And the top section of tubing is too thin to accept the 124 pivot clamp.I would suggest you go with a stand like the 1052BAC or similar.

Q: 5. what size is the diameter of the pole. 35mm? etc.

A: The diameter is 20mm

Q: 6. Does it come with the spigot for the boom? Thanks in advance.

A: Yes a 5/8" spigot is included with the arm.

Q: 7. Im thinking about buying it to use with a Selens 75' (12.05 pounds). Does this arm will hold it?

A: The maximum load capacity of the Manfrotto 085BS Heavy-Duty Boom and Stand at full extension is 13.2 lbs (6kg) with the included 15 lbs (7kg) counterweight. If you use a larger counterweight or use the boom arm at a shorter distance (not at full extension), it can support more weight. As you state your setup weighs 12.05 lbs, it should be compatible for use with the Manfrotto 085BS Heavy-Duty Boom and Stand at full extension.

Q: 8. What material? Steel or aluminium?

A: The Manfrotto Heavy Duty Boom Arm, Black - 9' (2.7m) is made out of a aluminum material.

Q: 9. I understand that the boom itself has 2 connectors (3/8" & 5/8"). However, what is the thread for mounting the clamp assembly itself? is the "short tube" that is pictured "faded out" at the bottom included? How does this mount onto anything?

A: The manufacturer listing for the K&M 21431 Mini Boom Arm only mentions "wing nut" clamping. The vertical pole pictured in this product image is not included with the boom arm. Given that this arm is meant for mounting onto mic stands, which standardly have a 5/8" thread, it can be presumed that the wing nut hardware included likely adapts to 5/8" threads in some manner.

Q: 10. What is the difference between the Manfrotto 085B and 085BS, in regards to the boom arm only?

A: The 085BS replaces the no longer available 085B. I believe the only difference in the boom arms was the color and the length. If memory serves me correctly the 085B has a 7' silver boom and the 085BS has a 9' black boom.They are both three section arms with the same counterweight and spigot. While I've never owned the 085B I do own the 085BS and can au the stand and the boom arm are extremely sturdy and hold up very well.