I was told that Hammer is only allowed to use the gas mask core in the Black Widow series, from here on out.....due to the sheer size of the core!
If they use it in any other series of ball, it may not be USBC sanctioned!
For me though, a vibe core in a hybrid coverstock or a urethane coverstock would probably do it, perfectly.
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Duct tape is like 'The Force'. It has a light side and a dark side, but it still holds the universe together.
Some days you're the bug some days you're the windshield.