Workhorse Pro Grade Cobalt Countersink Drill Bits Set 5 Piece With M35 HSS Co 82 Degree Five Flutes 1/4 Inch Quick Change Hex Shank For Stainless Steel Metal Wood Carbon Steel Includes 1/4 3/8 1/2 5/8 3/4 Inch Bits

Premium M35 Cobalt Countersink Bits Set, 5-Piece
✔️ Five 82° cobalt bits set, sizes 1/4 to 3/4 in, hex shank

This pro-grade cobalt countersink drill bit set is built for fast, clean countersinking across metal, wood, and composites. Perfect for shop work and DIY projects, it accepts standard 1/4 inch hex shanks and delivers precise, flush screw seating every time.

✅ M35 HSS cobalt coating delivers heat, wear, and corrosion resistance.
✅ 82-degree countersink tip ensures clean, accurate holes in metal, wood, and plastics.
✅ Five-flutes design minimizes vibration and clears chips for smoother drilling.
✅ 1/4 inch permanently attached hex shank simplifies bit changes on drills.
✅ Includes sizes 1/4, 3/8, 1/2, 5/8, 3/4 inch for common countersinking tasks.

💡 What is a countersink bit used for in everyday woodworking and metalworking projects?

It creates a conical seat for screw heads and helps screws sit flush. - Creates a conical recess that matches screw heads for flush seating
- Handy for flush seating in wood, metal, and plastics
- Reduces splitting and cam-out while finishing surfaces
- Works with drills that accept hex shanks for quick swaps