ezraX Tummy Trimmer & Hand Gripper in One: The ab exerciser targets specific muscles of your body to build your fitness. Rowing movements of this exerciser trims and tones your abdominal muscles and strengthens your arms, legs, hips and thighs. It burns extra calories, melts away your abdominal fat around your waist to give you a flat and firm stomach. The exerciser also functions as a hand gripper. Grip the inner handle and pull. It exercises your arms, wrists, fingers, forearms simultaneously Heavy Duty Steel Springs: Heavy duty carbon steel springs create resistance and builds your muscles. The long springs build resistance to build your upper and lower body muscles. The shorter hand gripper springs build resistance to develop hand, wrist and forearms. Adjustable to different fitness levels: The ab exerciser can be adjusted to varying fitness and resistance levels.