The Makita XPS 3/8 Inch x 44m Nutsetter 2pk (E-18845) is expertly engineered to withstand the hardest-hitting impact drivers (sold separately). XPS 3/8 Inch x 44m Nutsetter 2pk (E-18845) set provides convenient pick-up and retention of hex fasteners. The (E-18845) features lobular design drives along flats to reduce rounding of hex fasteners, as well as flat edges at hex opening for full contact with flanged hex head screws. The Nutsetters feature rare earth magnets that increase holding power compared to standard magnets. The Magnetic Nuttsetter Set features a calibrated heat-treating process for added durability. It is engineered with a Matte Nickel surface for best-in-class corrosion resistance. The (E-18845) is ideal for driving hex head nuts and self-tapping screws in a wide variety of applications.