Sold and Durable rubber-coated high-quality cast iron core. Solid Chrome plated knurled handle. No maintenance is required . a long-lasting finish prevents rust. Flat hexagonal surfaces will prevent rolling and knurled handle prevents slipping. Use it wherever is most convenient in your home or in a commercial gym. Build muscle . gain strength . and get ripped. Dumbbells are perfect for building muscles in the 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 . they’re also great for aerobics . cardio . yoga . and strength-building. These dumbbells make for a great birthday gift . holiday present . anniversary gift . or any occasion for yourself or for a loved one.