The 356.7g three-hole steel plate column base A-03 is an iron plate that plays a key role in the installation of chair armrest accessories. It weighs 356.7g and has a thick texture, which can provide a solid foundation for the entire structure. The three holes on this iron plate are cleverly designed to be used for precise connection with the column, ensuring accuracy during the installation process. As an embedded component, it needs to be placed in the appropriate position in the early stage of construction. It is mainly used for the installation of armrest accessories. When combined with other components, it can firmly fix the armrest column, making the armrest stable enough in daily use to withstand various pressures and tensions.