The perfect insert bits accessory set for your power screwdriver.
This 39-piece Block-o-bits set features Torx, Hex (Allen), Clutch, Square Drive (Robertson Head), Phillips and Slotted Insert Bits.
This professional set of interchangeable screwdriver bits is organized into 2 plastic blocks, one to hold the bits, one for a lid. Bits are made from S-2 tool steel for a longer service life. Kit also includes a 1/4" hex x 2" long magnetic bit holder.