Spyder nut drivers are impact rated for demanding high torque 1/4¿ impacting applications. Powerful magnets retain fasteners for enhanced driving accuracy and one-handed ease of use. These one-piece tool steel nut drivers are engineered for use in impact drivers, and can also be used in standard rotary drills with a 3-jaw chuck. A low profile design makes these drivers ideal for confined area use. Easily drive hex fasteners and nuts with the power of your impact driver. Powerful magnets secure fasteners for reliable driving.1/4-in impact rated hex shank for demanding jobs.