Usage Tips:About this item: Package includes: You will receive Umbrella stand tube x 1, 1-1/4 inch (32 mm) PVC pipe sleeve x 1, 1-1/2 inch (38 mm) PVC pipe sleeve x 1, 1-9/10 inch (48 mm) PVC pipe sleeve x 1, Steel nail x 1, Metal rings x 3, Tightening knobs x 2. High-quality materials: Our umbrella stand parts are made of high-quality industrial-grade stainless steel, which is durable, reliable and will not break or deform. There are welding points around the bottom of our umbrella tube base to ensure that it is not easy to bend and break. You can use them with confidence. Adjustable diameter: Three PVC sleeves are provided in the kit. The sizes are 1-1/4 inch (32 mm), 1-1/2 inch (38 mm), 1-9/10 inch (48 mm). You can choose the appropriate sleeve according to the diameter of the umbrella pole. Easy to use: There is a screw hole at the bottom of the table umbrella tube stand base. Just pass the screws through the screw holes on the bottom of the granite slab and the bottom of the stainless steel umbrella tube stand, and then tighten the steel screws. In this way, your umbrella will not rotate and move in the wind and can be moved to where you need it. Wide Application: The item can be fixed on cement slabs, granite slabs, iron plates, wooden tables, marble slabs, etc. It is also suitable for poles such as umbrella poles, flagpoles, wind vane poles, etc. Specifications: Color: Silver and Black Material: Stainless Steel, PVC Package Contents: 1 x Riser 1 x 1-1/4 inch (32 mm) PVC pipe sleeve 1 x 1-1/2 inch (38 mm) PVC pipe sleeve 1 x 1-9/10 inch (48 mm) PVC pipe sleeve 1 x Steel nail 3 x Metal rings Only the above package contents, other products are not included. Note: Light reflection and different monitors may cause the color of the item in the picture to be slightly different from the actual object. The measurement allowable error is +/- 1-3cm.