Superb set comprises – 1 x 6ft Solid Spinlock Standard Barbell 2 x 18″ Solid Spinlock Standard Dumbbells 6 x Spinlock Collars 4 x 5Kg Cast Iron Tri-Grip Standard Discs 4 x 2.5Kg Cast Iron Tri-Grip Standard Discs 8 x 1.25Kg Cast Iron Tri-Grip Standard Discs 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.