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Screw mechanism for Swivel Stools
Replacement mechanism for most swivel-type piano stools. Plate measures 4-1/2" x 4-1/2" with 4 screw holes on each plate. There are 4 screw holes....one in each corner (they are 1/4" holes). These are spaced 3-3/8 apart (center to center) Closed height at lowest 4" and opens up to 8" O.D. of threaded tube is 1-1/4"
Threaded pipe is 1" diam.
Mounting plates are 4-1/2 square
Top mounting plate is 3" high