Live Pros kettlebells are made of all-steel material, allowing it to retain the performance advantages of competitive kettlebells and prevent rust as compared to traditional cast iron kettlebells. Our design of the all-steel kettlebells conforms to the standard size for competition kettlebells. All sizes are equivalent throughout every weight level. The standard sizing of the handle and kettlebell allows the lifting technique to be the same every time. We designed this kettlebell with a hard chrome surface treatment that will not fall off or rest like other traditional kettlebell coatings.