4 Pcs Office Chair Saver Kit Sinking Office Chair Saver for Stop Sinking Gas Lift Cylinder Stopper for Repair
Premium Material – Made of steel for rock-solid strength; far more resistant and reliable than plastic versions.
Scientific Design – Two heavy-duty set screws lock the collar tight to stop chair sink, while the extra-wide contact face spreads load to prevent damage. Height can be fixed by clamping or stacking multiple rings.
Universal Fit – Compatible with most office chairs using a 28 mm OD gas lift cylinder.
Tool-Free Install – No need to disassemble the chair; simply slide the ring over the cylinder and tighten with the supplied wrench.
Generous Pack – Four anti-sink rings per set give you spares, replacements, or the option to fine-tune seat height.
