TOPFUND Industry is a professional manufacturer of quartz products, such as quartz crystal singing bowl, tuning fork, didgeridoos,fused quartz tubing and fused quartz labware, and so on . Currently, North American, European, Australian and...

The transforming Switch Pitch ball by Hoberman is such fun! This is the original, genuine switch pitch, not a knock off. We cannot stop throwing this - everyone finds it fascinating! Toss it in the air and watch the colors magically flip. ...

The transforming Switch Pitch ball by Hoberman is such fun! This is the 4 inch version of the genuine switch pitch, not a knock off. We cannot stop throwing this - everyone finds it fascinating! Toss it in the air and watch the colors magically...

TOPFUND Crystal Singing Bowls are manufactured from 99.9999% pure quartz crystal, and are the finest, pristine, crystal singing bowls. The crushed quartz is heated to at least 4000 degrees in the manufacturing. Then, they are tested to determine...