back in their day they were the hooking ball that columbia put out. That thing moved so hard compared to anything else they made it was rediculous. I figure it would probably be a great medium to heavy oil ball now a days. Its definately not as strong as some of the newer balls but it can still hold its own. Hope this helps.
Jeremy
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"Strive to be perfect, that is afterall the only way to become perfect."
"If you compare yourself with others,
you may become vain and bitter;
for always there will be greater and lesser persons than yourself.
Enjoy your achievements as well as your plans."
Taken from Desiderata
Proud user of Columbia 300 and Visionary Bowling Products