Amazon.com: S&R Metal Concrete Masonry Drill Bit Set 23 Pcs. Multi Functional: 10 Metal Drills HSS M2 Steel / 7 Concrete Drills / 6 Wood Drills/Bits Set in Metal Box Multi-Purpose :
7/16" x 18" Ship Auger Bit
Brad Point Drill Bits - 8 Pcs 3-10mm Spur Point Spiral Twist Wood Metric Drill Bits with Durable Case Wood Working Tool for Hardwood or Softwood (Black) - - Amazon.com