Home Depot offers the Ryobi Black Oxide 35-Piece Drill Bit Set, model no. A973501, for $3. Opt for in-store pickup to avoid the $79 express delivery charge. That's $2 under our mention from six days ago, a low now by $11, and the best price we've seen. These steel bits feature a black oxide finish and come in sizes 1/16" to 5/16".