Are you looking for a professionals, yet Fix Sinking Office Chair? Are you in search of a sturdy, trustworthy Fix Sinking Office Chair? , ! Our Fix Sinking Office Chair must meet your needs. It is one of the for you. Features -Color:Multi -Material:Stainless steel , plastic -Size:6.70X3.00X2.90cm/2.63X1.18X1.14in -Note: Diameter:25-27mm -The office chair saver is made of plastic and stainless steel, stable and reliable, not easy to break. -The screw of the tool to prevent the chair from sinking can be adjusted according to different chairs. -At the same time, if the cylinder fails, this office chair clip can also fix the chair from sinking, which greatly saves the cost of buying a new chair. -This chair fixing tool is very easy to install. the height of the chair you want before installation, unscrew the screw, install the clip on the column, put in the screw and tighten it with a wrench(not included), the clip can be firmly fixed on the column. -Suitable for a variety of chairs, you can apply them , school, office, restaurant, cafe, and other places. Package list: 2 x office chair savers