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K&M Boom Arm XL (16.5 to 28.7")

BH #KMBAXL • MFR #21150.500.55
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K&M Boom Arm XL (16.5 to 28.7")
Key Features
  • Expandable Boom Arm
  • Swivel Joint
  • 3/8"-16 Male Thread
This K&M Boom Arm XL is an extendable boom arm with a 3/8"-16 male thread. The arm extends from 16.5 to 28.7" in length, and it features a swivel joint with a T-bar locking screw. The boom arm provides excellent stability, even with heavy studio microphones, and it holds its set position even after many hours of use.
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K&M 21150 Overview

This K&M Boom Arm XL is an extendable boom arm with a 3/8"-16 male thread. The arm extends from 16.5 to 28.7" in length, and it features a swivel joint with a T-bar locking screw. The boom arm provides excellent stability, even with heavy studio microphones, and it holds its set position even after many hours of use.

K&M 21150 Specs

Key Specs
Mic Mount Thread Size
3/8"-16 Male
Boom Arm Type
Telescoping
Length
17 to 29" / 420 to 730 mm
Counterweight
No
Bottom Thread Size
3/8"-16 Female
Color
Black
Item Type
Boom Arm
Microphone Mounting
Mic Thread Size
3/8"-16 Male
Boom
Boom Arm Type
Telescoping
Length
17 to 29" / 420 to 730 mm
Adjustment Type
Clamp Mechanism
Counterweight
No
Bottom Thread Size
3/8"-16 Female
Physical
Color
Black
Construction Material
Steel
Weight
1.8 lb / 0.8 kg
Packaging Info
Package Weight
1.94 lb
Box Dimensions (LxWxH)
20.3 x 4.1 x 2.5"

K&M 21150 Reviews

Superior

By Christian
Rated 5 out of 5
Date: 2025-08-15

This should be the arm that comes standard on K&M stands. Much better at holding heavy mics in place.

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