Solid and durable rubber encased with a high-quality cast iron core. Solid chrome-plated knurled handle. No maintenance is required; the long-lasting finish prevents rust. Flat hexagonal surfaces will prevent rolling, and the knurled handle prevents slipping. Use them wherever is most convenient, whether it’s for your home gym equipment or a commercial gym. Build muscle, gain strength, and get ripped. Dumbbells are perfect for building muscles in arms, shoulders, and back. Achieve a toned back, flat abs, and sculpted arms with these versatile free weights. Perfect for overall health, balance, and weight management, fitness, weight loss. They’re also great for aerobics, cardio, yoga, and strength-building. These dumbbell weight sets make for a great birthday gift, holiday present, anniversary gift, or any occasion for yourself or for a loved one. Available in various pairs: 3lb, 5lb, 8lb, 10lb, 12lb, 15lb, 20lb, 25lb, 30lb, 35lb, 40lb, 45lb, 50lb, 55lb, 60lb, 65lb, 70lb, 75lb, 80lb, 85lb, 90lb, 95lb, and 100lb.