The Pro Solid 50kg weight set is a great set for those wanting to get into doing some serious weights but are just starting out and want to get a good initial setup. With the addition of a few more weight plates this set would suit all except the most hardcore weights enthusiast, reinforcing the versatility of free weights and this set. The plates themselves are made from cast iron with double baked enamel coating, the bar hole is 1 inch or 2.54cm in diameter. With 40kg of weight plates with the remaining 10kg in the set being made up from the bars and spinlocks.