Makita Impact-X SQ1 x 152mm (6") Driver Bit Impact-X is a line of impact-rated insert bits & fastening accessories built specifically for the demands of the professional contractor. Professionals require commercial duty bits & fastening accessories that can endure the force of high-volume screw driving applications with high torque impact drivers. Standard screwdriving bits are brittle & fit poorly into fasteners, & in applications with high torque impact drivers this losing combo quickly leads to broken bits. Impact-X hits back with improved fitment & increased performance with high torque impact drivers. Precision machined (not forged) tips ensure full contact fit, while performance-optimized & heat-treated S2 steel provides more flex & more durability than standard, brittle bits.