This is a 4A model with an aluminum rim in a POM body. FUGAKU (POM) is designed for rotational power and stability. Although weighing over 83g, the model is easy to speed up and operate. JT members Tsubasa Takada and Ryo Oishi prefer the POM version. Although the yo-yo has minimal bounce when dropped, it is also very effective in contests and solo ham tricks, where the yo-yo can be easily overpowered due to nervousness. ※We recommend periodic replacement of the axle (sold separately) for this heavyweight model. ※Please note that there may be some black marks on the surface of the body, which is a characteristic of the POM material. ＜YoYo Spec＞ Material：POM ＋ AL rim Diameter：69.6 mm Width：67.0 mm Weight：83.6 g Bearing：C size Axle：M4 × 15mm Pad size：Slim size