I picked up an old black hammer urethane for the right price,FREE!I can't find the specs on this ball anywhere.Did Hammer use the very same core in the sling blade as the old Faball Hammer's? other then some track the ball is in good shape and drilled almost perfect for my span,new slug and grips is all I need.planning on useing it at the State tourney this year as it's allways dry wood lanes and maybe a spare ball.any info would be great.
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The harder I try the harder they fall

first place I looked but no core #'s.not that it really matters much,just was curious.I did my first cut on the spinner and MAN you could smell the oil!ball is soaking right now.
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The harder I try the harder they fall

yeah,not much oil came out so I figured it's the cover.it also has alot of friction,burned my hand on the spinner trying to polish it.almost smelled like kerosene.
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The harder I try the harder they fall

If you lok at a picture f the Purole rhino Pro core it's a copy of the Hammer core. At least that's what i was told by the Brunswick/Quantum  presenter during the first proactive seminar yars ago. According to him because Hammer had not pattented the core they copied it so the had a known quantity with their first reactive ball

Try this link.  First ball I ever owned.  Still regret giving it away to my friend.  I could still average 190 with this ball and it's 20 years old.

http://www.bowlingballreviews.com/ball.asp?ballid=290

Mark