Sure is. I got one but I aint gettin rid of er. kinda funny how companies always come out with newer and better stuff but in all reality the older stuff hooks just as much if not MORE than the new stuff. only difference between my old original Rock and my Track Mutant is that the rock rolls a little later and has more backend. but thats because of the way it is drilled. Good luck in your quest to find this Gem. By the way, Bowlingballmall.com has the original ROCK NIB for 100 bucks, only problem is they only have 12,13,and 14# left.
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Conversation between me and my girlfriend.
Her(what I hear):Blah blah blah blah blah BOWLING blah blah.
Me: What did you say about bowling?
Her: I didn't say bowling I said, DRIVING, I'm tired of driving.
Me: Ohhh. Nevermind.