Yoyo, ASSAULT by Yoyomamma, not yoyofactory, duncan, yomega, yoyojam, hspin, dif-e-yo, spyy 10 ball grooved bearing, stacks, o-ring response system, 2 high quality strings included along with spare o-rings. Not a yoyofacfory, duncan, hspin, yomega, yoyojam, spyy, dif-e-yo.