BOSCH T4047 Multi-Size Screwdriver Bit Set (47 Piece), only $11.78Use for almost all driving and fastening applications. Bits are extra hard and designed to withstand the high torque associated with today's more powerful impact drivers. Forged tips create a stronger and more flexible torsion zone reducing breakage and extending bit life. Made of highest quality S2 tool steel for durability. Proven sub-zero tempering process gives bit long life.Set includes 47 pieces, featuring insert bits, power bits, magnetic nutsetters and a finder driverIdeal for almost all driving and fastening applications