rythalix 11 inches-16.5 inches office chair cylinder replacement - 5.5'' stroke, heavy duty 1000lbs class 4 hydraulic lift, universal pneumatic piston fit for sinking desk/gaming chairs matte black 5.5‘’ height range is up for auction in Office Products. The current bid is $1.00, 96% below the $25.99 MSRP, in Good Condition. This auction has ended — similar items appear in live auctions regularly.