Features: The base adopts a mortise and tenon structure with pins, which enhances stability after installation. This design helps the base stay firmly connected to the column, reducing the risk of loosening over time. With no screw holes on the surface, the set maintains a smooth and unified look. This attention to detail in design ensures that the installed stair column presents a neat and visually pleasing appearance, blending well with different interior styles. Specifications: Material: red Oak Size: Wooden post skirt: 5 inches outside, 3.56 inches inside Wooden railing post cap: 4 inches x 46 inches Blank post: 3.5 inches x 3.5 inches x 48 inches Package includes: 1 ×Wooden post skirt 1× Wooden railing post cap 1× blank post Notes: Manual measurement, please allow slight errors on size. The color may exist a slight difference due to different screen displays