Weight bolts for Lucasi, Rage, Dufferin, Players, and PureX Brand cues. These weight bolts come in 0.5oz increments and are used for weight changes. Before purchasing a weight bolt, we recommend that you determine the weight of the bolt in your current cue, then size up based on how much you want to increase your overall cue weight. Please also note that some Lucasi models have a screw in bumper where the screw through the bumper will thread into the weight bolt. Several cues are not weight adjustable, so be sure to take your butt cap off and check to see if there are threads or an existing weight bolt inside.