Versatile Sizes: This set includes four countersink drill bits in sizes 2.8 x 8 mm, 3.2 x 8 mm, 3.5 x 10 mm, and 4 x 10 mm, each featuring an 82-degree countersink and a 1/4 inch hex shank. An included hex key allows for easy adjustments, making this set suitable for consistent and deep countersinking. Material: Made from HSS-M2 material, these drill bits deliver precise drilling and clean countersinks. The durable construction and 1/4 inch hex shaft make them compatible with both cordless screwdrivers and drills, offering versatility for various wood applications. Protective Design: Each bit features an aluminum stop ring and a green anti-scratch rubber pad to help protect work surfaces. The internal self-centering bearing design promotes smooth operation. Adjustable Features: Customize your drilling depth with adjustable settings. The bit holder enables precise depth control, while the fixed countersink and grub screw allow adjustment of drill length and lowering position. Wide Application Range: Suitable for natural wood, chipboard, synthetic fiberboard, plywood, and MDF, this countersink drill set provides a reliable solution for creating accurate countersinks. Its adaptability makes it a practical tool for woodworking tasks requiring precision. Color: As shown Material: Metal Package Contents: 1 x stop countersink drill 4 x drill bits (2.8 x 8 mm, 3.2 x 8 mm, 3.5 x 10 mm, 4 x 10 mm) 1 x small wrench Only the above package content is included; other items are not part of the sale. Note: Light reflection and display differences may cause slight variations in color. Measurement may vary by +/- 1-3 cm.