How to purchase a 60 inch cue?

The website has a section for 59 & 60 inch cues.  However, I only see the 30" butts when I click customize on all of those cues and no 30 inch shafts.  Is this because the 30" shafts are out of stock? 

https://www.predatorcues.com/usa/pool-cues/pool-cues-by-type/60-and-61-inch-long-pool-cues.html