Klein Tools 328091 9-in-1 Multi-Nut Driver Tool, Pass Through Driver with SAE Hex Nut Sizes from 3/16 to 3/4-Inch and Cushion-Grip Handle

9 HEX SIZES: 3/16, 1/4-Inch, 5/16, 11/32, 3/8, 7/16, 1/2, 9/16, 3/4-Inch, PASS THROUGH HANDLE AND BARRELS: Allows for easy work fastening nuts onto threaded rod of any length, EXTENDED WRENCH-ASSIST: On each barrel for added torque on tough jobs, COLOR-CODED SIZES: Easily identify the different sizes with the color-coded ends, HEAVY-DUTY: Tool provides greater torque and comfort with the heavy-duty, Cushion-Grip handle, COMPACT STORAGE: Nesting barrels allow for compact storage in tool bags or in workbenches, SPRING COILS: Retain nuts and bolts on sizes 3/8, 1/2, 9/16, 3/4-Inch