Description: 【HEAVY DUTY MATERIALS】 Patio Umbrella Accessories is made of heavy steel, very strong, surface black paint treatment, antirust, durable to use for years. 【EASY TO INSTALL】The umbrella Accessories can be quickly installed This umbrella base stand features 2 hand-turn tightening knob for securing umbrella to the base. 【Feature】With a Thickened Steel Tube, patio umbrella base stand resistant to bending, lasting for years to come, it can securely support 50lbs table umbrella and can be used in any weather conditions. 【SPACE SAVING】Thanks to the accessories on the balcony railing, you can leave more space for using. 【WIDELY APPLICABLE】: These umbrella replacement parts are practical and classic tools, which can be installed in most umbrellas for more options in outdoor space. Size Chart: Height 50cm/19.69inch Inner diameter 5cm/1.97inch Hole diameter 9.5cm/3.74inch Package Includes: 1pcs Patio Umbrella Stand Base Note: Please allow slightly errors due to manual measurement and different monitors.