Swivel Tilt Chair Mechansim - 10 Guage

5 1/4" x 5 1/4" on centers holing
(Also fit's holing 6-1/4" long) Heavy duty 10 gauge steel
Shaft tapered, 1" diameter x 4 3/4"
Solid steel shaft pressed and welded. Solid steel 1 piece pivot pin.
Heavy duty tension spring.