This Outsunny patio umbrella stand will keep your parasol weighted in place. The plastic shell makes it suitable for outdoor use, with concrete filling so it stands steady. Adjustable footpads for balance on uneven floors. Complete with tightening screw on the steel pole holder to secure in place. 18kg weighted umbrella base, for 34-48mm poles: Garden parasol base is suggested for Outsunny skus 84D-004, 84D-005 and 84D-117. Measure pole diameter and weight before purchase. Plastic shell, with concrete filling: A tough shell, this garden umbrella base is strong inside, to keep parasol standing in place. Tightening screw: Secure pole in place to this parasol umbrella base. Adjustable foot pads: Keep outdoor umbrella stand steady on uneven surfaces. Dimensions: 33H x 45.5L x 45.5Wcm. Pole: 25H x ?5.2cm. Easy to assemble.