Revival systems tri grip plates are encased in rubber to extend the longevity of the plates they are also hexagonal in shape to stop the bar rolling away when loaded

Sizes and dimensions : 

▶️suitable for any 2 inch loadable bar
▶️ 5kg : 25cm diameter
▶️ 10kg : 32cm diameter 
▶️ 15kg : 36cm diameter 
▶️ 20kg : 40cm diameter