Bolt Fitness Supply ELITE KETTLEBELLS From swings, lifts, squats, and jerks, Bolt's Elite Kettlebells are optimized for packing on muscle mass, elevating metabolism, and improving balance and stability. Designed with a matte black powder-coated finish for durability and texture, cast iron for longevity, and color-coded handles for practicality, the Elite kettlebells would make a great addition to your gym. Specifications of product: Weight: 20kg.