Brand new high quality gym rubber encased dumbbells the industry’s most “durable” and dependable dumbbell. These dumbbells have a patented design that makes them maintenance free. Urethane encased heads minimize damage to floors and equipment. The ergonomic handle is hardened chrome and secured to the heads with our own patented process. Very reliable, we guarantee its structural integrity. Our 35 millimeter ergonomic handle features a hardened chrome finish and is secured to the head with a quarter inch roll pin.