Just weighed my Aramith Tournament Duramith set.
1 thru 9 weighed 169 grams
10 thru 15 weighed 170 grams
Ball 11 weighed 171 grams
Blk Aramith Cue weighed 169 grams
Red Circle cueball 168 grams and another 167 grams
Blue Circle cue ball 167 grams
Balls were taken out of Diamond Ball...