Just wanting to confirm the full extended length, description says "37, is that accurate?

The K&M mic boom at it's full extension is a total of approximately 29" from the point at which the mic boom meets the stand to the threads where the mic clip is mounted. There is approximately 7.75" behind that point where the boom exits the stand clamp to the rear of the boom. Therefore, the entire length of the boom is approximately 37", but your mic reach will depend on the length of the microphone plus 29" from the point that the mic stand and boom meet. You will get close to a 37" reach, but at that length it is necessary to hang additional weight on the back of the boom if you have a heavy mic (or bungee cords to hold up a mic such as an Electrovoice RE-20). I have used mine with an EV RE-20 since 2018 and it has held up, but it has developed a slight bend from using it with the EV at extended lengths for days or weeks at a time.

what is the maximum extension?

Hello, Boom arm length is 800 mm. If you have any more questions, please feel free to reach out to us at any time. Janine F.

In addition to zoom can the boom twist within the mount?

The boom can be moved left to right at any time. Up and down requires tightening and loosing. The small knobs for length allows for the mic to be be turned as needed.

K And M 21120 Microphone Stand Boom Arm

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Description

🎤 Elevate your sound game with the boom arm that means business.

ROBUST LOCKING SYSTEM - Large wing nut ensures rock-solid stability, so your mic stays exactly where you want it.
PREMIUM ALLOY STEEL BUILD - Engineered for durability and sleek black finish that complements any studio or stage.
TRUSTED BY PROS WORLDWIDE - Join the ranks of audio experts who rely on K&M for flawless performance.
PRECISION TELESCOPIC REACH - Extend your mic setup effortlessly beyond 37 inches for perfect positioning every time.
SILENT SCRATCHLESS SWIVEL - Adjust angles smoothly without distracting noise or wear—professional-grade finesse.

The K&M 21120 Microphone Stand Boom Arm features a two-piece telescopic design with over 37 inches of adjustable reach, a silent and scratchless swivel joint for smooth angle adjustments, and a large wing nut locking system for secure positioning. Crafted from durable black alloy steel, it’s a trusted choice among professionals seeking reliable, high-quality audio accessories.

Specifications

ASIN	B003BQ4IL2
Base Type	Tripod
Body Material Type	Alloy Steel
Brand Name	K&M
Color	Black
Customer Reviews	4.6 4.6 out of 5 stars (75)
EU Spare Part Availability Duration	10 Years
Finish Type	Matte or similar non-glossy finish
Global Trade Identification Number	04016842209828
Included Components	Telescopic Boom Arm, Swivel Joint
Item Dimensions	59.7 x 7.1 x 10.7 centimeters
Item Type Name	Music Stand
Item Weight	1.6 Pounds
Manufacturer	Connolly Music Company
Manufacturer Part Number	21120
Material Type	Stainless Steel
Maximum Height	37 Inches
Microphone Stand Thread Size	5/8 Inch
Model Number	21120
Product Style	Boom microphone stand with a telescoping boom arm
Unit Count	1 Count

Reviews

A**R

Excellent construction and works perfectly.

18.11.2025

S**T

much better and sturdier than the cheaper boom arms...

16.09.2017

W**M

A good solid boom at a great price. Would have been a 5 star but I own an Atlas stand so I know what a really good one looks like.

14.07.2019

M**Y

K&M products never disappoint, and the boom arm is no exception. It is very sturdy, of great quality, and perfectly resolves the need for a longer arm on stage!

7.10.2025

M**S

Work well!!! Good quality!

21.09.2025

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TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

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3 weeks ago

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