Ideal for any toolbox great for dealing with deep screws no more slipping thanks to the special bit which fits perfectly into most manual and electronic screwing machines the designensures that no damage is caused to the screws low contact force when screwing the thin profile allows the bit to reach into incredibly narrow areas for deeply embedded screws set of 10 90 mm long includes 4x cross slot size 0 1 2 3 5x pozidriv size 0 1 2 3 1x slot material cv steel titanium coated