Extreme Impact Ready FLEXTORQ screwdriver bits , Optimised tip geometry for full fitment in the fastener and reduced cam-out , Full-fit head eliminates wobble and screw head rounding , Optimised torsion zone maximises bit life and turning force even in the most demanding applications , Contoured area of the bit flexes with the torque of the impact driver to absorb torque peaks and protect the bit for longer life,