YoYo Yo! - Grind Machine - YoYoFactory - All plastic YoYo ...
YoYoFactory Grind Machine The funky YoYoFactory plastic YoYo with hub stacks!. Next generation yo-yo performance. The Grind Machine is the first non-metal yo-yo to feature YoYoFactory's patented triple bearing hubstack technology.Combine this with a modern shape, textured grinding surface, silicone response, the large Central Bearing Co. SPEC bearing, and you have one of the highest ...