Boston stage pro series clamp collar for microphone stand

A replacement nylon collar for Boston microphone stands (may fit other stands)

Main Part/Handle

A)   Overall length 87mm

B)   Internal dimension 24mm

C)   Internal dimension at internal threaded part 23mm

Insert

D)   Diameter internal (measured at thread area) 23mm

E)   Internal (inner section) 14.5mm

F)   Internal (outer section) 19.7mm

As you tighten down the larger handle the internal nylon unit is compressed to grip the central pole of the microphone stand.