Power Systems Premium Forearm Exerciser, Adjustable Weight Dumbbell, Includes Seven 1/2-Pound Weight Plates with 13 Inch Handle, Black/Chrome (40530) Set includes: Forearm Exerciser, 7 plates (1/2 pounds per plate) and carry bag 7 weight plates are 3-Inch diameter each Handle measures 13 x 1 inches Adjustable weight dumbbell Weight training aid for speed, agility, strength, power, running, football, volleyball, basketball, baseball, soccer and all other athletic, fitness, weight, or cross training