Milwaukee Electric Tool 48-22-2507 Mag SAE Driver Set (7 Piece) Consists Of: 1/4", 5/16", 11/32", 3/8", 7/16", 1/2" and 9/16" Hollow Core Magnetic Nut Drivers Ideal For Long Bolts Or Threaded Rod applications Magnetic Drivers Secure Fitment In Fastening applications