WHAT’S INCLUDED: One pair of 40lb REP dumbbells LOW ODOR: Dumbbells feature premium, low-odor rubber, a fully knurled straight handle, and a secure press-fit and welded handle to secure dumbbell head to handle. SOLID GRIP: Dumbbells have a fully knurled, straight handle with 28mm diameter from 5-20lbs, and a 34mm diameter handle for 25lbs+. The 34mm diameter adds comfort for heavy dumbbells, and the full knurl offers superior grip versus semi-knurled “ergonomic” handles. CONSISTENT QUALITY: Our dumbbell weight is accurate to within a 3% variance for 25lbs and under and a 2% for 30lbs and above. DESIGNED IN DENVER, CO: Rep Fitness is a full-service equipment company based in Denver, Colorado. We carry a complete line of strength and conditioning equipment, including benches, barbells, racks, and more! Rep Fitness Rubber Hex Dumbbells Made from premium, low-odor rubber, Rep Fitness dumbbells are a classic, rubber-coated hex dumbbell design that is quiet and easy on your floors and superior to others on the market. The chrome-plated handle is straight and fully knurled for maximum grip. Unlike slippery "ergonomic" handles that only have knurling across part of the handle surface, our full knurl gives you a secure grip on the dumbbell at any weight. This feature is usually only found on premium, "pro-style" dumbbells costing more than twice as much. Rubber Hex Dumbbells vs. Adjustable Dumbbells A rubber hex dumbbell set can last a lifetime and is a great investment in your health. A rubber dumbbell is great for a huge variety of exercises and never goes out of style. A staple in many strength and conditioning programs, dumbbells allow you to develop real-world strength by moving heavy objects in your hands. It doesn't get any simpler. Specs Handle diameter is 28mm for the 5-20lbs weight, and 34mm for 25lbs and above. The thicker 34mm handle adds comfort for heavier weights. Dumbbell heads are securely attached via friction welding, an extremely durable process. Lifetime warranty for home use. Three-year commercial warranty.