OnlineScienceMall 2 Inch Mega Marble ToeBreaker - Jumbo 50mm Glass Marble w Stand (Poison Dart Frog) Play for fun. Play for keeps! Jumbo 2 Inch Glass Marble (50 mm) Opaque "Poison Dart Frog" Pattern Glass Toe Breaker Sized Shooter Includes metal display ring stand Black Glass with Yellow & Brown Swirls