HAJEX Rubber Hex Dumbbells feature a great design and achievable option that delivers quality, performance, and durability. Each dumbbell is manufactured with heavy-duty cast iron and the highest quality rubber. Our sturdy, rubber-enclosed HEX heads diminish noise and limit wear and tear. You can include the Rubber Hex Dumbbells in any fitness or strength training routine. You can build muscle, stabilize muscles, or expand your fitness gear. You can use it anywhere i.e. in your home, outdoors, in a studio, or in a hotel. It’s perfect for Commercial purposes as well as Residential use. Practice a bunch of dumbbell exercises from training your biceps/triceps to your glute, these dumbbell sets are ideal to get the job done. Manufactured with cast iron, the dumbbells ensure lifelong durability and a protective covering prevents them from rusting. Alongside the versatility in weight choices for many athletes, a good set of dumbbells can be used to replicate almost any type of barbell exercise, while also offering a wider range of single-arm, rehab-specific, and pinpoint movements in virtually any sized space. Rubber Hex Dumbbells up to 150LB feature the following: 28-35mm diameter handle 10lb and above have a larger 30mm+ diameter handle for a better grip of the dumbbell Features & Specifications: Weight range: 2.5lb to 120lb Handle Diameter (Grip): 28MM up to 10lb, 30-35mm for 10lb and above Tolerance Level: +/- 3% Heavy-duty Rubber Encased Heads: Minimum noise or floor damage upon a throw-off, and least wear and tear on the dumbbells for a long period. Solid-grip, ergonomically designed Chrome-Plated Handle 1-year warranty on quality