Crown Sporting Goods Black Cast Iron Kettlebell Weights Kettlebells extend mass beyond the hand, building strength, flexibility, and athleticism in a wholly unique way Long-lasting cast iron coated with corrosion-resistant enamel. No logos, no rubber accents, no nonsense, just quality Flat bottoms enable upright storage as well as renegade rows and other floor-based drills Textured, wide handles suit most hand sizes and ensure a secure grip mid-workout. Machined smooth for superlative comfort Never too thick for a proper grip, our maximum handle diameter is 1.58"