Does a screwdriver have to be the exact size as the screw to work?

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The Klein Tools 3-Piece Screw-Holding Screwdriver Set is designed with positive gripping

slotted drive screw and they are very annoying to work with because the electrical screwdriver keeps slipping from the screw slot So my Screwdriver for slotted screws KNIPEX 98 20 65 Schraubendreher für Schlitzschrauben 11 98 20 65

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