That cue looks like the Jump/Break manufactured by J&J cues in every manner, as far as I know it is a J&J just renamed.
I've broken with J&J J/B cues before, both pieces of the Butt has the same joint, but the lower half of the butt is longer than the top, so you can connect the top half to the shaft if you need a longer jump cue, but it wont be flush.
What I also noticed about this cue is that the joints are a poor quick release joint, they will get loose after a break or two, so you have to constantly tighten the cue. The joints also gives it a less solid hit if you're looking for a stiff breaking cue.
The item has wrong pictures with the description, there is no butterfly splice on this cue. The seller (carlscues) has been known to charge outrageous fees for shipping, and selling low quality cues by saying they are similar or 'better' to higher end products, hes comparable to a used car salesman. If you want to buy Billiards Products from someone on ebay, go to Neilsens Billiards, his prices are reasonable, and he has higher end stuff, and doesnt try to sell lower end by advertising them as similar to better than the higher end ones.