5-Piece Countersink Drill Bit Set – Adjustable Depth Stop for Woodworking

Why you'll love it:

• Drill the pilot hole and countersink the screw head in one operation
• Create cleaner, more consistent screw installations in wood
• Adjust the drilling depth to suit different screws and woodworking projects
• Five drill diameters cover a useful range of common screw sizes
• Ideal for furniture making, cabinetry, joinery, renovations, and DIY woodworking

Real customer feedback:

"Very useful when making furniture. The depth adjustment makes it much easier to keep every countersink consistent."
— Michael D.

"Having five sizes in one set is convenient. I can quickly choose the right pilot hole for the screws I'm using."
— Robert T.

"Makes screw installation look much cleaner than drilling the pilot hole and countersink separately."
— James P.

Product Description:

This 5-piece countersink drill bit set is designed to create a pilot hole and a recessed area for the screw head in a single drilling operation, helping produce clean and consistent results in woodworking projects.

Each bit combines a high-speed steel twist drill with a 90° countersink cutter. As the pilot drill penetrates the wood, the cutting section creates the wider recess needed for the screw head to sit flush with or below the surface.

An adjustable design allows the position of the drill bit to be changed relative to the countersink body. This gives you greater control over drilling depth and makes it easier to repeat similar holes across multiple pieces of wood.

The set includes five drill diameters — 2.8mm, 3mm, 3.2mm, 3.5mm, and 4mm — allowing you to select a suitable pilot-hole size for different woodworking screws and applications.

Key Features:

• 5-piece countersink drill bit set
• Drills pilot holes and countersinks in one operation
• 90° countersink profile for recessed screw heads
• Adjustable drill depth
• Five drill diameters: 2.8mm, 3mm, 3.2mm, 3.5mm, and 4mm
• 8mm shank diameter on all five bits
• High-speed steel drill bits
• Designed for drilling into wood
• Helps produce repeatable hole depths
• Suitable for furniture, cabinetry, joinery, renovations, and DIY projects

How to Use:

1. Select the drill diameter appropriate for the screw you plan to use.
2. Adjust the position of the drill bit to obtain the required drilling depth.
3. Secure the adjustment screw before drilling.
4. Install the 8mm shank securely in a compatible drill or chuck.
5. Position the bit perpendicular to the wooden surface.
6. Drill until the countersink cutter reaches the surface and creates the required recess.
7. Insert the screw so its head can sit neatly inside the countersunk area.

Additional Information:

The appropriate drill diameter and drilling depth depend on the screw dimensions and the type of wood being used. Testing the setup on a scrap piece of the same material before working on the finished piece is recommended.

This set is intended primarily for woodworking applications. Always ensure the adjustment screw and drill bit are securely tightened before operation.