Magnetic head for efficient holding and rapid changing of the bit. Stanley STHT0-62574 Bit-Screwdriver with 20 Bits and Ratchet,Black/Yellow, Set of 22 Piece. 3-position ratchet (screwing, unscrewing and blocking). Content: 20 bits, ratchet, screwdriver. Dual-material handle for more comfort and torsion. The package weight is 0.634 kilograms. Weight: 0.9 pounds. Manufacturer: Stanley Black & Decker.