I use this adapter for my impact wrench for the spline drive lug wrench.
Amazon.com: Buying Choices: ARES 70056 | 1/2-inch Drive 4- Piece Flip Lug Nut Socket Set | Includes 17, 19, 21mm Metric Sizes and 3/4,13/16, 7/8 SAE Sizes | Impact Grade Chrome-Molybdenum Steel Ensures Lifetime Use
Amazon.com: Buying Choices: ARES 70056 | 1/2-inch Drive 4- Piece Flip Lug Nut Socket Set | Includes 17, 19, 21mm Metric Sizes and 3/4,13/16, 7/8 SAE Sizes | Impact Grade Chrome-Molybdenum Steel Ensures Lifetime Use