RYOBI RAK48SDI Torque Plus Impact Screwdriver Bit Set, 48 PieceScrewdriver bit set includes 47x impact rated screwdriver bits and 60mm magnetic bit holder Engineered to deliver exceptional durability, Torque+ screwdriver bits deliver x10 more life vs standard screwdriver bits. Bits are specially hardened to withstand high torque output Max Fit delivers the best fit into fasteners, preventing the tip of bit from slipping out of the screw head, the Torque Zone flexes to absorb torque impact during demanding