They break easily so be CAREFUL when using a screwdriver. Practice on thin pieces of metal first to find out how hard you need to squeeze. My suggestion, buy 3. The first one you break and you think it was bad or you just weren't paying attention. The second one will break because you're still pushing and still can't believe how easily it's going to break. The third won't break because you're upgrading to an M6 because it's too expensive to keep replacing an M3. Much luck.
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