It is frequently stated that Aramith red circle cue balls are lighter than other cue balls. I believe red circle cue balls do tend to wear faster and become lighter. So - especially in a pool hall, older red circle balls definitely do become lighter than the object balls. But all the new red circle balls that I have bought in the last several years have weighed very close to the same at 5.9oz/ 168g - the same as a new measle ball or other Aramith set new cue balls.