The Gamma Fitness Wrist Arm Curl Machine GF-56 comes with a weight stack of up to 40 kilograms, allowing a full range of exercises that target the muscles of the forearm, arm, and shoulders. The adjustable seat cushion and padded bar make it comfortable and secure for all exercise routines. Manufactured in 2.5 x 2.5 inches heavy duty frame, designed precisely for wrist and forearm workout. The product is powder coated which makes it look premium and heavy duty.