A Very Long Lasting Chair tilt Mechanism Our tilt control lift mechanism is made of the heavy duty iron and steel,  which is sturdy and durable for chair tilt mechanism replacing.  You can easily adjust height of the chair when you feel low of the chair.  Match different height of tables.  It is very convenient to assembly. Just after few minutes, you would get an updated chair.  this product is very heavy plated . 2.5mm , and very weight full.