For its Rewards members, Ace Hardware offers the DeWalt 40-Piece FlexTorq Impact-Ready Screwdriver Bit Set for $14.99. (Not a member? It's free to join.) Opt for in-store pickup to avoid the $7.88 shipping fee. That's the lowest price we could find by $7 today, although we saw it for $2 less last December. These bits feature FlexTorq, which allows them to flex up to 15 degrees.