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Fit most Art Van, Douglas & other Kitchen/Dinette swivel/tilt Chairs
Top diameter of plastic insert measures 2 3/8" Outside diameter
Fits most 2 1/4" to 2 3/8" top outside diameter center column.
Fits 2 1/16" inside diameter center column.
Height 4".
All inserts have a 1" diameter center hole to accept the 1" thick steel shaft.
Fit's most 2 1/4" - 2 3/8" (top) outside diameter x 2 1/16" inside diameter metal tubes. All inserts have a 1" center hole to accept a 1.000" diameter steel shaft. We cannot guarantee measurements will be correct for your particular pipe dimension or wall thickness. Fit most Art Van, Douglas & Chromcraft chairs.