These quality made competition kettlebells are color coordinated to meet sport lifting standards. Made from steel instead of the traditional cast iron, steel kettlebells are more durable than cast iron. One piece molds make these industry leading kettlebells. Handles are not polished to allow for chalk and eliminate the slick handles to reduce the risk of the kettle slipping out of your hand. Each competition kettlebell has the same handle and overall diameter size, each kettle is color coordinated to industry standards.