The primary shaft is a standard 13 mm pro taper Jacoby shaft with an Everest.  This is the same shaft that comes standard with all Jacoby Custom Cues.  The 2nd Shaft is a Jacoby Jump/Break Shaft with a phenolic tip.  The taper is extra stiff and the rock hard phenolic tip is ideal for breaking and jumping.  You simply will not believe the performance.  The joint is quick release, so it only takes seconds to switch from the playing shaft to the break/jump shaft.

This cue also comes with a quick release jump break conversion joint at the top of the wrap area that is ideal for jumping.  The joint is so well constructed that you might not even know it is there.  You will find that this Jacoby cue will out perform just about any jump cue on the market with the jump break conversion and jump break shaft.

Finally, this cue also comes with a built in cue extender.  This may be the best feature on the cue.  All you need to do is unscrew the butt of the cue, pull out the extension and screw it into place.  You now have a cue that is 6" longer for those hard to reach shots. 

This is truly the only cue that you will need.  It is a fantastic value because you will no longer need a separate jump cue, break cue and extension.  The quality of the workmanship and playability is outstanding.