Do they come with a ball like jack sets?

No, there is no ball. There are only Gong-gi stones.

Are these filled with lead like the versions from the 90s?

not sure whats inside but they are not heavy at all.

Are the insides non toxic

I tested the stones with a magnet and found that they are strongly magnetic like iron. Lead is non-magnetic, therefore the beads inside cannot be made of lead, they are probably iron.

ASIN	B01NCL7DOK
Age Range Description	Kid
Brand Name	ARA
Color	Multicolor
Container Type	Box
Customer Package Type	Standard Packaging
Customer Reviews	5.0 5.0 out of 5 stars (1)
Educational Objective	Fine Motor Skill Development
Included Components	Case
Is Assembly Required	No
Manufacturer	ARA
Manufacturer Part Number	5655493
Material Type	Metal, Polyvinyl Chloride
Model Name	Gonggi Konggi Gong Gi
Model Number	5655493
Number of Items	13
Number of Players	1
Operation Mode	Manual
Other Special Features of the Product	Traditional
Package Quantity	1
Product Style	Classic
Size	S
Theme	Game
UPC	793631606375

ARA Gonggi Konggi Gong Gi Korean Jacks Jack Stone Game 1 Case x 13 Pieces

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