I have actually got a 240lbs Atlas Rock available. 18" diamater.
It was made by Strongman Peter Wagner with a Slater mold and mildew so you know it excels quality.
Just raised it a handful of times. I train with the Hyperforce training crew and we have 2 x 240lbs rocks so I could do away with this.
Strongman - Powerlifting - Crossfit - Olympic - Weights - Weights - Atlas Stones.