Mini MTB Wheel Spinning Top

2 Sizes! Mini Mountain bike wheel top, 40mm diameter ORLarger Mountain bike wheel top, 80mm diameter Having almost all of it's weight as far away from the center allows it to spin longer and be more stable! Printed in two halves. Assembly is really easy, and you can do it two ways!Insert small alignment pegs into the holes on the bottom of one half of the wheel, snap other half of the wheel on. (Doesn't need glue!) OR Just line up the tire treads and glue two half's together (avoid the hassle with small connecting pieces!)