[Premium Material] The chair saver is made of quality Material, quality and reliable, not easy to break; Compared with plastic saver, our chair saver can offer you with a long term use. [ Design] 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 chair clip can also fix the chair from sinking, which greatly saves the cost of buying a new chair. [Easy to Use] This chair fixing tool is very easy to install. Just adjust 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, the clip can be firmly fixed on the column. [Wide Application] The chair piston is suitable for a variety of chairs, you can apply them , school, , restaurant, cafe, bar and other places, helping to fix the chairs. [Package Content] You receive 3pcs 25-28mm/0.98-1.1inch chair fixing tool and 3 hex wrench installation tool. The chair gas lift cylinder bracket, equipped with silicone gasket to effectively fix the chair to prevent sinking, with a wrench tool for easy installation.