Large glass base for spinning tops. The glass portion is a 5 inch (127 mm) diameter concave lens. It comes with a black acetal holder that has a precision machined counterbore with a diameter that matches the lens. There is an 1/8 inch lip above the glass to keep spin tops from going off the edge. The glass can be removed from the acetal portion for easy cleaning.
Comes in a gift box.
(This item includes the glass lens and base only. Spinning top is sold separately.)