Specifications:- Overall Dimension(LxWxH) 20 1/16" x 24" x 20 7/8" (51 x 61 x 53 cm)- Base Size(LxW) 21 5/8" x 24" (55 x 61 cm)- Plastic Ring Inner Diameter 1 1/4", 1 9/16", 1 7/8" (3.25, 4, 4.8 cm)- Wheel Size(Dia.xH) 2 3/16" x 2 15/16" (5.6 x 7.5 cm)- Fits Pole Dia. 1 1/8" to 2 3/8" (2.8 to 6 cm)- Material Painted Steel- Net Weight 13.2 Lbs (6 kg). Package Contents:- 1x Mobile Base- 4x Wheels- 1x Knob- 4x Screws- 1 Set of Rings- 2x Wrenches- 1x Manual