The MILWAUKEE 7PC SAE HollowCore Magnetic Nut Driver set includes 1/4”, 5/16”, 11/32”, 3/8”, 7/16”, 1/2”, and 9/16” sizes. These nut drivers feature a HOLLOWCORE Shaft, which delivers unlimited depth in threaded rod and long bolt applications. The color-coded markings allow for easy size identification and the wrench-ready steel shanks provide additional leverage for tougher applications. Milwaukee HOLLOWCORE Nut Drivers are backed by Milwaukee's Limited Lifetime Warranty.