Sidewinder ProXtreme &ndash; The Ultramodern Wrist, Forearm, Fat Grip Strengthener #3, Adjustable Resistance Blast off your forearm-grip workout  multiplies both your grip and forearm strength in just weeks Fat grip wrist/forearm exerciser  2-inch diameter grip size helps you reduce injury and lift more weight Adjustable resistance  great for anyone from absolute beginner to superhuman. More convenient than using a forearm roller with weight plates. Built to last  made with solid tubing, solid steel, and neoprene handles Developer for stronger grip, wrists, forearms, biceps, triceps, and shoulders Weight: 4.3 pounds Length: 14.75&#034; inches Grip handles: 6 inches on each side Diameter: 2 inches