There are 32 pieces of black plastic chair covers in total. The quantity is enough for daily use and replacement. The insert is suitable for pipes with an outer diameter of 16 mm and a wall thickness of 0.5 mm to 2 mm. Made of PE plastic, sturdy and durable. Suitable for outdoor and indoor use. Commonly used on metal furniture legs to protect floors while reducing noise. Suitable for hollow pipes such as round metal tables, chairs, and furniture legs. Product Dimensions 16L x 14W x 14mm Note: The data are all manually measured. Please allow 1-3cm error. Due to differences in light and display, there may be color differences. Please refer to the actual item received.