Cando wate hand-held weighted ball with 2-tier pvc rack, 6 color set the color coded weighted balls are small enough and flexible enough to grasp with one hand, yet big enough to hold with two hands. Available in 6 weights ranging from 1.1 pounds through 6.6 pounds (0.5 kg to 3 kg.) while maintaining a constant 5″ (12.7 cm) diameter. Balls are soft and comfortably conform to your grasp. Use a bicycle pump to inflate/deflate to make ball harder/easier to grasp. Cando wate ball – hand-held size – 6-piece set (1 each: tan, yellow, red, green, blue, black), with 2-tier rack. Pvc rack measures 18″l x 6″w x 12″h.