Shape, Butterfly for string tricks, 1A, 3A Material, aluminium Weight, 64 grams Shape, Butterfly for string tricks, 1A, 3A Material, aluminium Bearing, 12.7x6.35x4.75mm/0.25x0.5x0.187inch Weight, 64 grams Outer Diameter (inches),52MM/2.05inches Width, 38mm/1.5inches Response Type, Double O-Ring Gap Type, fixed