Gravity GR-GWB123WPB Weight Plate for Round Speaker Pole Base Item GR-GWB123BA weight disc from Gravity's patented VARIWEIGHT stability system that ensures both a more secure footing of the system as a whole. The disc weighs 5 kg and can be quickly assembled without tools. It is suitable for extension tubes with an M20 screw thread and provides for a particularly sturdy stand. Material Cast iron Color Black Surface Powder coated Diameter 13. 7" 350 mm Features Weight plate can be mounted quickly and without tools. Weight 11