7 Pieces Center Drill Bits Set, M2 High Speed Steel 60-Degree Angle Center Drill Bits Kit Countersink Tools for Lathe Metalworking Size 1.0 1.5 2.0 2.5 3.0 4.0 5.0 - - Amazon.com
FTG USA Wood Countersink Drill Bit Set #6#8#10 Set Countersink HSS M2 Tapered Drill Bits, Quick Change Hex Shank Countersink Bit, 1 Stop Collar, Allen Wrench, Countersink Drill Bit for Woodworking - - Amazon.com
Lichamp Step Drill Bit Set for Metal Sheet Heavy Duty, 5-Piece Genuine M2 HSS Step Up Down Drill Bits Stepper Unibit for Steel Hole, 50 Sizes from 1/8 to 1-3/8 inches - - Amazon.com
HSS6542 M2 Steel Spiral Groove Unibit HSS Step Drill Bits Set for Metal Stainless Steel Wood Step Cone Drill Hole Cutting Tool, Set of 3 - - Amazon .com
LittleMachineShop.com High Speed Steel (M2) Tool Bit Blank Set, 5/16" Square x 2.5" Long, 10 Pieces (4142) - - Amazon.com
COMOWARE Center Drill Bit Set - Countersink Lathe Mill Tooling Set, HSS, M2 - - Amazon.com
VCT 3pc Step Drill Bit Set Unibit Titanium HSS M2 28 Sizes Industrial Reamer - - Amazon.com
Saipe 5pcs 1/4" Quick Change Hex Shank Metal Stubby Drill Bits Short Drill Bit Set HSS M2 for Right-Angle Drill Attachment and Used in Tight Spaces, 3/32, 1/8, 3/16, 1/4, 5/16-Inch - - Amazon.com
FTG USA Wood Countersink Drill Bit Set #6#8#10 Set Countersink HSS M2 Tapered Drill Bits, Quick Change 1/4 inch Hex Shank Countersink Bit, 1 Allen Wrench, Countersink Drill Bit for Woodworking - - Amazon.com