I drill my Ultra sonic with pin over the bridge at 5 5/8 x 5.This ball has excellente length with great backend.The Ultra Sonic is great ball and probably better in sonic line.
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Thanks,
Henrik Tremblay
Roto-Grip International Staff
www.rotogrip.comKING OF THEM ALL
Henrik,
If you are on staff you will need to do better than this. Though on a scale of 10 it does rate 1 point higher than the reviews that say "It hits like a
truck.", we expect more than that from a staffer. Just ranting....
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Bowling is for sissies..ask Bones...