Gym Fitness Equipment Competition Weight Training Cast Iron Coated Kettlebell. Wide Weight Range: Available in weights from 4KG to 50KG including 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 25, 28, 30, 32, 35, 36, 40, 45, 50. Durable Cast Iron Material: Constructed from high-quality cast iron with a black coating for long-lasting durability. OEM and ODM Services: Full customization available including new mold creation to satisfy special customer requirements. International Certifications: Product certified with CE, ISO, and RoHS standards for safety and quality assurance. Fast Component Replacement: Free replacement components sent within 24 hours for any damage during the warranty period. Professional Assembly Support: Installation instructions and labeled parts provided to assist with easy assembly. Gym Size Planning Advice: Expert advice available for gym layout and sizing based on extensive experience. Flexible Shipping Options: Shipping available via sea, air, land, and international express to suit your needs.