The /Manfrotto 254B Auto Boom can be mounted to a wall with the included bracket, or onto a heavy duty steel light stand. It extends from 43.3 - 78.74" (1 - 2 m). It replaces old #3388B.
Self-balancing spring and piston system that allows quick repositioning without the need to release knobs or locks
Aluminum construction
Length
4 - 6.5' (1 - 2 m)
Weight
34 lbs (15.4kg)
Maximum Load
Minimum Extension: 17.6 lbs (8kg) Maximum Extension: 8.8 lbs (4kg)
Attachment Size
5/8" double ended stud with 1/4-20 and 3/8" threads, and female socket
Avenger
F825TH Baby Swivel Pin with 5/8" Pin for Grip Head
This is a Manfrotto 013 brass double-ended spigot that fits 2940, 2941, 3077, 3077, 3085, 3087 and 3095. It has a 5/8" (16mm) diameter with 1/4-20 and 3/8" threaded tips. It is identical to/replaces #3094.