Not intended for medium or above pressure. Doesn't hold the blades

Not sure the point of this product, as the holder tool barely holds the blades, and if you press hard at all the blades will slide out of the holder, even when tightened down to the max. This product should enable you to scrape stuff with some amount of force, otherwise you might as well just use your fingernail. The tightening knob is also plastic and seems fragile.

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