Joytech 4.13'' (105mm) Diameter Spinning Top Base Crystal Glass Concave Mirror, Great High End Transparent Surface Double Concave Top Accessory DZ06

Very chip quality product.......

Works very well with my foreverspin official tops. Draws the top in toward the center where it can perform it's mesmerizing dance

This is exactly what it says a 100mm diameter concave on both sides glass disk just what i wanted for spinning a gyroscope and messing with light rays but the one i was sent has some chips in the edge not bad enough to ruin the function of the disk but still enough to show poor quality control

Worked well for a while, then broke when it fell from the desk onto carpet floor. Surprised given it was ~75cm drop and nothing protruding onto the glass. Oh well, wasn't expensive, it happens.

It works acceptably as a spinning top base, but the finishing on the edges of the glass is disappointing. In the pictures it looks smooth and minimalist, but in reality the edges are quite rough with some chipping and discolouration - nowhere near as elegant as advertised. Would suggest buying a vast from a more well-known brand instead…