... plates Stainless Steel Inserts weight :1.25kg~20kg, Tri-grip rubber weight plate1.Weight size 1.25kg,2,5kg,5kg,10kg ... ,15kg,20kg.2.Black3.Regular4.Cast iron inside,rubber outside,with nice quality.5.Package/poly bag,then carton ... .6.No odor and polution,durable design of high quality barbell plates. Tri-grips Rubber Weight Plate