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Most extensive chair parts replacement catalog online
17 1/2" long screw to screw. Large bell 4"± is intended for 4 or 5 legged office chair base. Engineered by C/K. Dual spring "H" type frame for up to large size office chairs with thick backs, and heavier weights. Painted black. Threaded Acme Post is 1" diameter and approx. 8" tall plus 3" unthreaded for greater stability and to avoid rocking.
Manual mechanism works for old style and antique office chairs.
4 or 5 leg models.
The best choice for chairs with large thick backs.
