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Title: Will not tighten--don't buy
Review: I've tried using a slightly different model (635-011) of this on two different occasions. The blade simply will not seat securely and tighten enough into the handle to work. Trying to tighten an Andersen door handle was an exercise of frustration. I could not get this screwdriver to hold--the handle would turn, while the blade would not. Waste of money.
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