3/8 X 13/64 High Speed Steel Countersink for metal - Countersink Bits - Amazon.com
5pcs Metal Countersink Drill Bit Set for Wood, Metal, Steel, Mill Drill Bit Set Size is 1/4” 3/8” 1/2” 5/8” 3/4”with High Speed Steel, 82 Degree, 5 Flute, 6mm Round Shank, Carrying Case - Amazon.com
amoolo Single End Countersink Bit, Cobalt Steel Countersink Drill Bit with TiAlN Coating Finish for Hard Metal, 82 Degree Point Angle, 3/8” Round Shank, 1/2” Body Diameter - Amazon.com
Drill America 3/16 in. 60-Degree High Speed Steel Countersink Bit with 6 Flutes DEWCHAT3/16-60 - The Home Depot
Irwin 5-Piece Black Oxide Metal Countersink Bit Set - Hevenor Lumber Co.
ASNOMY 5Pcs Countersink Drill Bit Set for Metal, M2 HSS 82 Degree Counter Sink, 5 Flute 1/4 Inch Hex Shank 1/4” 3/8” 1/2” 5/8” 3/4” Countersink Drill Bit for Most Metals, Wood,Fiberglass Plastic - Amazon.com
Countersink Drill Bit for 3/8" Tap
Fisch - Adjustable Countersink Bit 1/8" - 5/16" D x 1-3/8" OAL
Eazypower Isomax 3/8 in. Tool Steel Countersink Bit 1/4 in. Hex Shank 1 pc. | Ramsey Hardware
Melin Tool - Countersink: 3/8″ Head Dia, 82 ° Included Angle, 4 Flutes, High Speed Steel, Right Hand Cut - 57819435 - MSC Industrial Supply
55212 Carbide Tipped Countersink #12 Screw 15/32 Dia x 7/32 Drill Dia x 3/8 Round Shank