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'Hammer type' is kinetic. Got a new one after I wore one out.
If it breaks, contact the maker. Most will take care of you.
My first one became a toy for my son.. He would pound on the floor (concrete work area) as I loaded. Humm, he's 36 now, I didn't have the heart to complain about it's longevity, best I can figure, 25 years or so.
Be safe,
OSOK
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