From Kotobukiya. This M.S.G set is a complete renewal of the original Round Finger hand units. The set includes four types of left and right hands, each equipped with a swing joint. The set also includes three types of connector parts: 3.0mm Joints, 3.5mm Ball Joints, and 5.0mm Ball (can be attached to the 3.0mm joints.) The variety of connector parts allows these hand parts to be used with a variety of Kotobukiya's plastic model units, including the Frame Arms and Hexa Gear lines.