Photo 1 of HYEJDRV 300LBs Office Chair Tilt Control Mechanism Replacement Parts(Not Standard/Universal Size),W/ 5.9" × 8.6" Mounting Holes Chair Base Heavy Duty Plate Swivel Tilt Control Seat Mechanism

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Photo 1 of HYEJDRV 300LBs Office Chair Tilt Control Mechanism Replacement Parts(Not Standard/Universal Size),W/ 5.9" × 8.6" Mounting Holes Chair Base Heavy Duty Plate Swivel Tilt Control Seat MechanismPhoto 2 of HYEJDRV 300LBs Office Chair Tilt Control Mechanism Replacement Parts(Not Standard/Universal Size),W/ 5.9" × 8.6" Mounting Holes Chair Base Heavy Duty Plate Swivel Tilt Control Seat Mechanism