General description This granite umbrella stand tube is made of high-quality industrial stainless steel with a black paint finish, making it resistant to corrosion and rust. The base features firmly welded points, ensuring durability and stability. Technical specifications Material: Industrial stainless steel with black paint Included PVC reducer rings: Ø32 mm, Ø38 mm, Ø48 mm Components included: Umbrella stand tube x 1, 32mm PVC pipe sleeve x 1, 38mm PVC pipe sleeve x 1, 48mm PVC pipe sleeve x 1, steel nails x 1, metal rings x 2 Installation Insert the provided screw through the bottom of the granite slate and into the screw hole at the bottom of the stainless steel umbrella tube stand. Tighten the steel screw to secure the metal tube stand to the granite slate. Usage Choose the appropriate PVC sleeve according to the diameter of the umbrella pole (32 mm, 38 mm, or 48 mm) and tighten it into the stone tube holder. Secure the knob to prevent the umbrella pole from wobbling, even in