Staff Answer
Oct 08, 2026 - 02:38 PM
No. It is sold undrilled, without finger holes, so it can be fitted to your hand and span at your pro shop. Because the Gas Mask core is asymmetric, layout changes the reaction more than on a symmetric ball, so match the pin and mass bias to your game with your driller. 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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