Precision Weight and balance adjustment system. Everything you need to fine tune your Cuetec cue’s weight! This kit includes a hex wrench for removing bumpers of Avid cues, as well as a series of weights and spacers. If you want to have the weight sitting closer to the rear or the front, you can use the included 27mm and 54mm spacers. With two each of 0.25oz, 0.5oz, and 1oz weight bolts, you can add up to 3.5oz as long as your cue has the room to stack them.