The all new RAZE PWR Stones – allowing you to bring this classic test of strength into your training space in a safe and clean way. A fundamental test of strength in any strongman competition, stone training is a real whole body workout. Constructed from high grade materials, PWR Stones are virtually indestructible – yet they are comfortable to lift and will not damage gym floors. High quality construction featuring a hard wearing propriety rubber compound. 18″ diameter.