Resistive plastic injection body, with high performance ball bearing. come in various colours.patent in china,
1)Color : terra-cotta, gray, light blue and yellow. 2)Skill Level: advanced player. 3)YoYo Shape : Butterfly shape. 4)Material :Polycarbonate . 5)Bearing : ball bearing 6)YoYo Weight : 55 grams. 7)Diameter : 5.6cm. 8)Yo-Yo Width : 4.3 cm.