This superb Tri-Grip Olympic Disc set comprises – 1.25Kg Olympic Tri-Grip Plates x4 2.5Kg Olympic Tri-Grip Plates x4 5Kg Olympic Tri-Grip Plates x4 10Kg Olympic Tri-Grip Plates x2 15Kg Olympic Tri-Grip Plates x2 20Kg Olympic Tri-Grip Plates x4 Our BodyPower cast iron plates are made to an incredibly high standard, with all products undergoing strict quality control. The casting quality, surface treatment and weight tolerance must meet a set standard of quality. Some of the cheaper alternatives that are available on the web are inferior products, which are not constructed to this same standard.