Formula&reg; New Fashion Magic YOYO Blue N8 Dare To Do Alloy Aluminum Professional Yo-Yo + String New, high-quality and popular, cute styles,fits well in the hand Anodize surface, CNC lathe process, laser engrave logo and Aluminum body, made of aluminium alloy that allows for stable and balanced high speed routines Designed by the professional designer, its stainless steel ball bearing, weighted outer perimeter, smooth rubber return system, and adjustable gap system provide the different structures features according to different technical player Designed to train fine motor skills and eye-hand coordination, cultivate the imagination, creativity and rapid reactionability A perfect toy for kids, friends, families, etc