Power Systems Hand Forearm Blaster, Adjustable Weight Strength Training Aid, 28 x 19 x 20 Inches, Black (40520) Add desired weight and squeeze handles together to build hand and forearm strength Comfortable rubber-gripped handles Holds up to 70 pounds of Olympic size weight plates (plates sold separately) Steel construction with post adapter to hold standard or Olympic-size plates Exercise training aid for speed, agility, strength, power, running, football, volleyball, basketball, baseball, soccer and all other athletic, fitness, weight, or cross training