The Klein Tools 11-in-1 Ratcheting Impact Rated Screwdriver / Nut Driver's components are all impact rated for use with an impact driver. 1/4-Inch quick-connect on power nut drivers to easily switch from screwdriver handle to an impact driver (Impact driver not included). Ratcheting feature has three settings: forward, fixed, and reverse, facilitating easier driving. MOST COMMON DRIVE ENDS: #1, #2 Phillips, 3/16-Inch, 1/4-Inch Slotted, #1, #2 Square, T25 TORX and 1/4-Inch, 5/16-Inch, 3/8-Inch, 1/2-Inch Hex