Weight
15 pounds
Notes
Not big blue, but Track Spare “Blue Sparkle”. Spare balls have same pancake core.
PBA Approval Date
Release Date
Discontinued
Big Blue Spare is bowling’s bad-ass spare ball.
Factory Finish
Polished
Polyester Coverstock
Type
Polyester
Pancake (Columbia/Hammer) Core
Core Type
Symmetric
16 pounds
RG
2.640
Diff
0.020
15 pounds
RG
2.650
Diff
0.020
14 pounds
RG
2.690
Diff
0.020
13 pounds
RG
2.720
Diff
0.020
12 pounds
RG
2.750
Diff
0.020
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