I love the Roto Grip Spare Tire. I saw someone throwing it in a tournie I was in, and I went out and bought one the next day. It's the only ball I own that will never be sold, traded, or pitched.
In fact...the lanes tonight were flyin' so bad, I threw it the last game and shot 212, with a clean game. It was breaking like 5-7 boards..sooo cool!
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My Arsenal:
Brunswick Ultimate Inferno, Columbia 300 EPX T1, Roto Grip Spare Tire
I guess there should be a disclaimer here...my EPX cracked..and it hooks less than my Spare Tire...but still it's sadly in my bag.