[adjustable chair leg width] you increase the height of the furniture by 100mm, the table leg extender is suitable for table legs with a square or rectangular leg thickness of 1-3.7cm, please carefully measure the size of the furniture leg before purchasing [hard plastic material] the adjustable furniture lift is made of strong hard plastic and aluminum alloy. It is ideal not only for lifting beds and mattresses, but also for lifting bedside tables, sofas, tables, desks, cabinets and shelves at home and in the office to make your leg space more comfortable. [creating free space] the extra height not only increases the storage space under the bed, which makes the vacuum cleaner more flexible. They also allow older people to get up and out of bed more comfortably. Add 100mm height to beds, sofas, armchairs, tables, sofas and other heavy solid furniture to avoid shoulder and neck pain caused by low furniture height. [Protect your hard floor] The bottom of the sturdy sofa legs are