Screwdriver with concentric tip - has cylindrical or tapering tip protruding from its blade, with blade and tip or tip alone being interchangeable

摘要

The screwdriver has a cylindrical or tapering tip (3) protruding from its blade (2). This engages in a concentric drilling (6) in the screw (7), so as to align and grip it during fitting. The tip diameter can be the same as the blade thickness, and the blade with tip or the tip alone can be interchangeable. In the latter case the tip can be of spring material. ADVANTAGE - Aids working in positions difficult to reach.