18 Piece Professional Countersink Drill Bit Set & Tapered Woodworking Kit

Elevate the precision of your cabinetry and timber projects with this 18-Piece Deluxe Countersink Set. Engineered for trade professionals and serious woodworking enthusiasts, this kit allows you to drill, countersink, and counterbore in one seamless motion. Featuring premium M2 High-Speed Steel with a specialized nitrided coating, these bits are designed for superior heat resistance and longevity. Whether you are building custom furniture or performing structural timber repairs, this set ensures every screw head sits perfectly flush or hidden, delivering a showroom-standard finish every time.

Core Utility & Performance Features

• Precision 3-in-1 Action: The advanced 4-flute tapered design allows you to drill the pilot hole, create an 82° countersink, and counterbore for wood plugs simultaneously. This saves significant time on the job site while ensuring perfect screw alignment.

• M2 High-Speed Steel (HSS) Construction: Forged with industrial-grade M2 HSS and finished with a nitrided surface for maximum toughness. This provides exceptional wear resistance and rust protection, maintaining a razor-sharp edge through extensive use in both softwoods and hardwoods.

• Adjustable Depth Management: Equipped with specialized depth stop rings, allowing you to calibrate the exact depth of the counterbore. This ensures uniform results across your entire project, which is essential for high-end cabinetry and visible timber joints.

• Custom Plug Cutting: Includes 3/8" and 1/2" wood plug cutters, enabling you to create matching timber plugs from your project’s off-cuts. This allows you to completely conceal fasteners with a perfect grain match.

• Universal Quick-Change Shank: Features a standard 1/4" Hex Shank, making the bits compatible with impact drivers, cordless drills, and bench presses. The included magnetic extension provides extra reach for difficult angles and deep recesses.

Technical Specifications

• Material: M2 High-Speed Steel (Nitrided Finish)

• Cutting Angle: 82 Degrees (Standard for Wood Screws)

• Shank Type: 1/4" Hex Quick-Change

• Tapered Bit Sizes: #4 (7/64"), #6 (9/64"), #8 (11/64"), #10 (3/16"), #12 (7/32")

• Plug Cutter Sizes: 3/8", 1/2"

• Kit Total: 18 Specialized Pieces

• Storage: Heavy-Duty Impact-Resistant Case

Comprehensive Kit Contents

• 5 x Tapered Countersink Drill Bits (#4 to #12)

• 1 x Replacement #4 Drill Bit

• 2 x Wood Plug Cutters (3/8", 1/2")

• 2 x Depth Stop Rings (3/8", 1/2")

• 5 x Screwdriver Bits

• 1 x Magnetic Extension Bit Holder

• 1 x Socket Adapter & Hex Key

• 1 x Organized Carrying Case

Snagg It Tip

For the cleanest possible results in dense hardwoods, use a "pulsing" technique by pulling the bit back slightly during the cut to clear wood chips. This prevents heat buildup and ensures the 4-flute head leaves a smooth, burr-free finish. When cutting plugs, always use a scrap piece of the exact same timber species and orient the grain to match your project; this makes the fasteners virtually invisible once sanded and finished. Always ensure the depth stop is locked tight with the hex key before starting a long run of holes to maintain perfect consistency.