How to remove one way screw?

A handy person from Chicago says:
Trying to figure out how the 75-070 one-way screw removal tool works ... it doesn't work at all. Any sugestions?
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Casey from SWISCO responded:
I'm not sure why the one-way screw remover tool is not working for you. During fastener removal, the tool works based on pressure against the "high wall" of the fastener head. Perhaps you are not applying enough pressure? Also, please confirm that the fastener on the opposite side is not spinning. Check it out and get back to us.
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