When using a 1/4-inch impact driver, be sure to use impact rated fastener bits too.
Note: An impact driver isn’t always in impact mode. There is a level of resistance before the impact mode engages. Non-impact rated bits can handle light duty work where there isn’t enough resistance for the
If your lucky enough to have a tool house in the area that carries many tools a large box store doesn’t, you may find brands like: Bahco, Wera (Impaktor series bits), or Qualtool (Qryptonite) – I personally use these and they have great longevity.