Adjust-a-bells by Texas Recreation are for added resistance and weight in the water to strengthen and tone muscles. Each one includes a 20″ long bar with 6 buoy-rings that are removable and interchangeable. They can be used with 2, 4, or 6 buoy-rings. This provides 4 buoyancy ranges: 3, 6, or 9 pounds of resistance for each hand. 20″ long each, 6″ long centre grip. Color: Blue. Comes in set of 2.