low profile stubby (short handled) screwdriver with ratchet mechanism (anodised aluminium handle) bit holder in handle is magnetized to 'grab' & pull the bit in supplied with one phillips bit, size #2 (bit is 25mm long, it protudes 18mm once fitted into handle) driver handle receives any standard 6.35mm (1/4") hex shaft bit 50g weight (see product's photo/illustration for dimensions)