Fuller 3/8 in. x 1/8 in. Drill Countersink

Fuller 3/8-in. x 1/8-in. Drill Countersink

The Fuller 3/8-in. x 1/8-in. Drill Countersink makes it easy to drill a pilot hole and create a clean countersink in one convenient operation. Designed for use with a 3/8-in. diameter drill bit, this countersink slips onto the bit and helps prepare the hole for a 1/8-in. plug.

Drill and Countersink in One Step

Save time and simplify woodworking projects by combining pilot-hole drilling and countersinking into a single operation. The countersink attaches directly to a compatible drill bit, allowing you to create a properly sized recess for concealing fasteners with wood plugs.

Adjustable Drilling Depth

Use a stop collar to control the drilling depth and maintain consistent results from hole to hole. This makes the Fuller drill countersink especially useful for repetitive work such as cabinetmaking, furniture construction, trim installation, and other woodworking applications.

Versatile Woodworking Accessory

• Designed for use with a 3/8-in. diameter drill bit
• Creates a countersink for a 1/8-in. plug
• Drills the pilot hole and countersink in one step
• Fits onto compatible drill bits for convenient setup
• Use with a stop collar for controlled drilling depth
• Ideal for woodworking, furniture, cabinetry, and general shop projects

Important Note

Drill bit is not included and must be ordered separately. Select a 3/8-in. diameter drill bit appropriate for your application.