Not sold at retail, but you can browse Callaway
Some links here are affiliate links. If you buy through one, Bag Notes earns a commission, at no extra cost to you.
Players cited with this
Phil MickelsonPRESS“Phrankenwood first comes to mind — a custom driver that was designed specifically for the 2013 Masters in an extremely tight time window.”
Read the report1 more report from Phil Mickelson
“Looking for a club with the same workability characteristics and face technology as 3Deep, in driver length (45 inches) and loft (8.5 degrees), to take advantage of additional rollout on tee shots at 9, 10 and 15, in particular, Callaway's R&D department created a smaller-headed driver for Mickelson dubbed "Phrankenwood."”
Read the report
Players who use this also use

Callaway XR
also used by 1 of them

Ping G430 LST
also used by 1 of them
Ping G440
also used by 1 of them

Ping G440 LST driver
also used by 1 of them

Callaway Big Bertha Fusion FT-3
also used by 1 of them

Callaway Elyte
also used by 1 of them
Photo credits
- Phil Mickelson — Peetlesnumber1, CC BY-SA 4.0