Specification Material: Pp Load-bearing Capacity: 100-150kg/220-331lbs Gross Weight: 2.9kg/6.4lbs Net Weight: 2.2kg/4.9lbs Package Size: 46*46*12cm/18*18*4.7inch Outer Diameter: 28.6cm/11inch Inner Diameter: 27.5cm/10.8inch Height: 9.4cm/3.7inch Suitable Bucket or Stool Size: 25.5*26cm/10*10.2inch Package Included 1 * Bucket Dolly 5 * 360-Degree Universal Pulleys 3 * Screws.