Make it Snappy 3-Flute Flat Bottom Counterbore - 7/16 Inch

IRWIN 3016128 - Cobalt 1 7/16"

woobles Dry Diamond Drill Bits - Diamond 5 PCs 1/4, 5/16, 3/8, 1/2 inch

Trend QRDBGSet - HSS 3Piece 3/32 inch 7/64 inch 9/64 inch

Neiko 10047A - M2 HSS Steel 5-Piece 1/8, 3/16, 1/4, 5/16, and 3/8-Inch

WSOOX Square Hole Drill Bits - carbide 1/4 inch 5/16 inch 3/8 inch 1/2 inch

Amana Tool 55241 - Carbide Tipped 3/8 D X 7/64 Drill D X 1/4 Inch

STROTON 5% Cobalt Drill Bit Set - 5% Cobalt 21PCS 1/16-3/8 Inch

IRWIN Drill Bit - 1 2-9/16-Inch

Make it Snappy Flat Bottom Counterbore - Tin Coated 5/16 Inch

Milwaukee 48-89-1105 - Titanium-Coated 20-Piece 1/16-to-1/2-Inch