The MILWAUKEE® 7PC SAE HollowCore⢠Magnetic Nut Driver set includes 1/4â, 5/16â, 11/32â, 3/8â, 7/16â, 1/2â, and 9/16â 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.