With this U-ADVQ Adaptor, you can adjust your Viking Quick-Release cue to your own individual playing style. Never have to contend with an uncomfortable cue again when you use this cue adaptor. With a French cue wax and a Pro taper, this cue provides an extra smooth stroke and follow through. Never be forced to play with a standard cue again. It works with any Viking cue and can really give serious players a competitive edge.