Staff Answer
Oct 08, 2026 - 03:05 PM
No. It is sold undrilled, without finger holes, so it can be fitted to your hand and span. Because the Gas Mask core is asymmetric, layout has a strong influence on how early and how strong it plays, so match the pin and mass bias placement to your game with your pro shop. For layout guidance, Brunswick's drilling instructions for symmetric and asymmetric balls are on our site: https://www.bowlersmart.com/bowling-t...
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