3-Pack Countersink Drill Bit Set, 1/4" Hex Shank, 12mm 16mm 19mm, 90° Flute High Carbon Steel Chamfer Tool for Wood, Plastic, Soft Metal (Aluminum)

Product features

1. Creates a precise 90° countersink for flush screw heads, helping reduce tear-out and raised fibers when installing hinges, mounting hardware, and finishing cabinetry or furniture assemblies.
2. 3-piece countersink drill bit set includes 12mm, 16mm, and 19mm sizes with a 1/4" hex shank for fast swaps in drills/impact drivers—one kit covers common screw seat diameters.
3. High carbon steel body supports repeat use and steady cutting; use on hardwood, plywood, MDF, particle board, and plastics for clean chamfering when building, repairing, or refitting wood projects.
4. Optimized as counter sink drill bits for wood: form a neat chamfer before driving fasteners in trim, shelves, and joinery, improving fit and leaving a smoother surface around the screw head.
5. Works as a chamfer tool for deburring and edge cleanup on plastics and soft metals like aluminum at controlled speed; useful for prepping countersunk holes before installing screws and fixings.