ROCK JAW (Neck & Jaw Strengthener for boxers)
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10-13-2012, 02:59 PM
ESB Senior Member
Join Date: Dec 2007
Location: In my fucking happy cave.
Re: ROCK JAW (Neck & Jaw Strengthener for boxers)
Not sure how you could strengthen your jaw, but they have the same concept for your neck. It straps onto your neck so you aren't chomping on the bit.
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