Weights - weights for cues

Weights and  weights holders are usually used for cue in the professional Italian game or 5 quilles.
Weights are mounted inside the butt of the cue that has a cavity inside where you inserted an aluminum rod on which are applied longitudinally movable weights. Then you should balance the weight in the cue.
Weight may change from 538 to 591 grams and you can fill in all cue weights that a person needs.