Jeffrey Pang’s company, Luftverk, has built quite a name for themselves with creative design, beautifully executed packaging, and some pretty fantastic yoyos. So, of course, they’re trying to completely outdo themselves with their latest release, the Fulvia.

Two versions of the Fulvia will be release on May 31st: the Fulvia BTM-R and the Fulvia-R. The R is the standard version, an all-titanium yoyo with a new body shape and weight distribution. The Fulvia BTM-R is something else entirely; a titanium/steel bi-metal yoyo with weight distribution that is absolutely insane.

You can visit the Luftverk website for the full story (and I highly recommend that you do), but I’ve been talking to Jeffrey through this whole process and it’s more than a little amazing to talk to him every morning and get a progress update as he works with the machine shop, day in and day out, figuring out how to make this project happen. The last time I talked to him he’d figured out that he was going to have to hand-attach the steel rims to the titanium bodies himself, because the process was too delicate and his machinists didn’t want to touch it for fear of ruining the parts. Crazy.

The Luftverk Fulvia-R will retail for $290, and the Fulvia BTM-R will retail for $510. Quantities for both of these are extremely limited, and pre-orders will open Tuesday, May 31st at 9:00 pm EST, only at Luftverk.com.