Description: Professional M001-B YOYO ball, stainless center bearingsmoothly rubber return sysrem String tricks1A, 3A, 5A, For Advanced player in competition and daily practice Designed for yo-yo players learning string tricks, features a wide string gap and alloy axle that makes landing the yo-yo on the string much easier. Durable body and shining finish have made a favorite toy for kids, beginners and advanced users Material: Alloy Color Black SizeDia*L5.71*4.08cm/ 2.24*1.60 inch Specification: M001-B 1.Body Shape :Butterfly 2.Body Material:Alloy6061 3.Weight:66.3g 4.Diameter:57.12mm 5.Width:40.87mm 6.Gap Width:4.53mm 7.Bearing: Stainless center bearing 8.M4*12mm Stainless 9.Surface:Shining finish 10.Style: String Trick (1A, 3A, 5A) 11.Response pad: Yellow Silicon Pad 12.Twist-apart :Twist-Apart Package Includes: 1 piece M001-B Yo Yo Ball Toy with string (2 Pack) Note: CHOKING HAZARD Small parts. Not for children under 8 years. Due to manual measurement, there may be a 0 to 1 cm error, belongs to the normal phenomenon. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, Thank you!