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 a 3/8 inch 82° countersink and a 1/4 inch hex shank. An included hex key facilitates easy adjustments, making this set perfect for consistent, deep countersinking. High-Quality Material: Crafted from durable HSS-M2 material, these drill bits ensure precise drilling and clean countersinks every time. The robust construction and 1/4 inch hex shaft make them ideal for use with both cordless screwdrivers and drills, enhancing their versatility across various wood projects. Protective Design: Each bit is equipped with a aluminium boundary ring and a green anti-scratch rubber pad underneath, ensuring that your work surface remains unmarred. The internal self-bearing design promotes smooth operation and longevity of the tool. Adjustable Features: Tailor your drilling with adjustable depth settings. The set's bit holder allows for precise depth adjustments, while the fixed countersink and grub screw provide control over drill length and lowering position. Wide Application Range: Ideal for natural wood, chipboard, synthetic fibreboard, plywood, and MDF, this countersink drill set offers a comprehensive solution for creating perfect countersinks. Its versatility makes it an essential tool for any woodworking project, ensuring precise results. 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, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.