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you can get the same hard hands using a sandbag. but you cant conceal your hand. only iron sand bag lets ur hand look normal.

i cut off pants leg from jeans, put copper bb bullets inside it, and asked some tailor to sew it up for me with a machine.

all i can say is "iron defecation"
this guy is bizzare

he trains in nothing, isn't it obvious.
this guy is brain damaged.

sometimes you train the left hand because it's not your main hand so you dont abuse it. one hand trains faster and harder too. this is for all kinds of hand conditioning not just iron palm