1. Cast Iron Weight Plates 2. ISO9001/ 14001/ CE 3. 2.5kg, 5kg,10kg,15kg,20kg, 25kg 4. Manufacturer 5. Olympic plates Cast Iron Weight Plates:1. olympic barbell plates2. cast iron 3. 28mm hole 4. bush dia: 26~32mm5. color: black or customized6. available size: 2.5kg, 5kg,10kg,15kg,20kg, 25kg Cast Iron Weight Plates