Makita Impact 1/4 in. Hex Shank Gold Titanium Drill Bit Set (14-Piece) B-65399 - The Home Depot
EnerTwist Drill Bit Set, 246-Pieces Drill Bits and Driver Set for Wood Metal Cement Drilling and Screw Driving, Full Combo Kit Assorted in Plastic Carrying Case, ET-DBA-246 - Amazon.com
HORUSDY Impact Drill Bit Set, 112-Pieces 1/4" Hex Shank Impact Driver Bits & Screwdriver Bits Set for Screw Driving and Wood Metal Cement Drilling - Amazon.com