PP Chair Revolving Office Chair Steel Base + Casters (White Black) Wheels + Gas Hydraulic Lift Cylinder (120 mm) Heavy Duty Steel (Chrome Base) Mostly Fit to Every Chair 1

PP Chair Revolving Office Chair Steel Base + Casters (White Black) Wheels + Gas Hydraulic Lift Cylinder (120 mm) Heavy Duty Steel (Chrome Base) Mostly Fit to Every Chair 1

Mrc Office Chair Spare Parts Heavy Duty Gas Lift Hydraulic Pneumatic Shock Cylinder 120mm Universal Size Easily Replacement Fits Most of Executive Chairs (Black)

SEAT CHACHA Affinity Home Office Chair Height Adjuster (Standard Black)