Fuller 3/8 in. x 9/64 in. Drill Countersink

Fuller 3/8-in. x 9/64-in. Drill Countersink

The Fuller 3/8-in. x 9/64-in. Drill Countersink makes it easy to drill a pilot hole and create a clean countersink in one step. Designed for woodworking and general fastening applications, this countersink attachment helps streamline your drilling process and prepares holes for a neat, professional finish.

Drill and Countersink in One Step

Slip the countersink onto any drill bit with the specified diameter to combine pilot-hole drilling and countersinking into a single operation. This saves time and eliminates the need to switch between separate drilling and countersinking tools.

Adjustable Drilling Depth

Use compatible stop collars to control the cutting depth and achieve consistent, repeatable countersinks. Proper depth control is especially useful when preparing holes for wood plugs or creating uniform recessed fastener holes across a project.

Versatile Woodworking Accessory

• Drills the pilot hole and countersink in one operation.
• Designed for use with a 3/8-in. diameter drill bit.
• 9/64-in. countersink size for preparing holes for the desired plug size.
• Fits onto the specified drill bit for convenient setup.
• Use stop collars to control drilling and countersinking depth.
• Ideal for woodworking, cabinetry, furniture making, and general shop projects.
• Helps create clean, consistent recessed holes for a professional appearance.

Easy to Use

The Fuller Drill Countersink is a straightforward addition to your drill-bit collection. Install it on the appropriate drill bit, set the desired depth with a stop collar, and drill the pilot hole and countersink together. It is a practical solution for projects where clean, repeatable countersunk holes are important.

Note: The drill bit is not included and must be ordered separately.