Csyibeielec Countersink Drill Bit Set – 4-Piece M2 HSS with Depth Stop Collar, 82-degree Counterbore, 1/4in Hex Shank

Enhance your woodworking with precision countersinking

The Csyibeielec Countersink Drill Bit Set is designed to help you achieve flush, clean holes with confidence. This 4-piece collection combines durable materials, smart geometry, and adjustable depth control to support accurate countersinking across a range of tasks, from fine joinery to general drilling. With an emphasis on reliable performance, these bits are built to perform in real-world shop conditions, giving you consistent results without guesswork.

What’s in the set

• Sizes include 3/16 x 1/2, 11/64 x 1/2, 9/64 x 3/8, and 5/32 x 3/8, covering delicate to mid-size countersinking tasks.
• Premium M2 high-speed steel construction delivers solid hardness and durability for repeated use.
• Helical flute design and sharp cutting edges promote fast, smooth cutting and clean edge details.
• Independent depth control with hex screws and depth stops enables precise, repeatable depths for different materials.
• Broad material compatibility includes natural wood, engineered wood, MDF, particle board, plywood, aluminum, and non-ferrous metals, making it versatile for woodworking, renovations, and DIY projects.

Precision and control you can rely on

The depth control collar system offers flexible adjustment, supporting consistent results across various materials. When paired with a compatible drill, you can expect clean, well-defined edges and suitable countersink depths for proper screw seating in your project.

• Tip: operate at about 200 RPM for the cleanest finish and longer bit life.
• Tip: slower speeds can help reduce tear-out on hardwoods or delicate decorative materials.

Why this set fits in your shop

Whether you’re renovating furniture, building cabinetry, or tackling DIY upgrades, this compact set provides a complete solution without sacrificing precision. The 82-degree counterbores align with common fasteners, and the 1/4in hex shank ensures compatibility with a wide range of power tools, making it a practical addition to your toolkit.