Fix Sinking Office Chair Saver? If so, take at this Fix Sinking Office Chair. Using safe and reliable materials, which are and stable. The unique design and craftsmanship ensure its popularity and practicality. Features -Color:Sky-blue -Material:Stainless steel , plastic -Size: 7.50X4.20X2.90cm/2.95X1.65X1.14in -Note: Inner Diameter: Φ32-34MM -Simple and to fix your sinking office chair. Installation takes only few minutes, easy to install. -The height of the chair can be adjusted and fixed according to your needs, bringing a comfortable seating experience to you. -Made of reliable material, which has strong load-bearing capacity, more practical and effective, not easy to break or crack. -It takes about few minutes but once done your chair will no longer drop down. -Easily solve your chair sinking problem without spending more money on a new chair. Package list: 2 x office chair savers