i have one undrilled...
its powerkoil 14 coverstock (weak).
its a "bleeder" coverstock, meaning, when it is warmed even slightly there is a slick nasty plasticiser that comes out of it.

its brunswicks version of a 2 piece spareball/desert lane ball.
(see Lane #1 XXXL)
core of the original inferno, and looks exactly like one too.

i cant wait for the time i use it on bone dry conditions.
it will definately beat out any plastic pancake spare balls, for the pot.
and for the $35 i got it for, what a steal!
--------------------
USBC Sanctioned Bowler
Average: 211

My Arsenal (Complete)