Balls approx 2 3/4" across. Set looks to be in good condition. I don't know what they are made of. They are fairly heavy at about 1 1/2 pounds each. No paper directions. This set is listed as used, there are some scuffs / scratches on the balls.

Payment expected within 3 days. Notify me if you need more time. Purchase is as-is. Since this is a non-returnable / non-refundable item, Please ask if you have any questions BEFORE you bid/buy. Feedback will be gladly given once mine received.