Countersink Drill Bit Set of 6 with Depth Stop Collars, 1/4 Inch Hex Shank HSS Wood Drill Bits for Precise Screw Sinking - 2.8, 3.2, 3.5, 4 mm Sizes (Red)

• 【Premium HSS-M2 Material】These countersink bits are crafted from high-speed steel HSS-M2 ensuring excellent cutting performance wear resistance and a long service life for reliable wood processing.
• 【Adjustable Depth Stop】Each bit features a removable depth control ring that prevents over-drilling and protects workpiece surfaces This allows for perfectly flush screw installations in materials like wood plywood and MDF every time.
• 【Efficient Spiral Flute Design】The optimized spiral groove quickly ejects wood chips outward during drilling This effective chip removal prevents clogging reduces heat buildup and ensures a smoother cleaner drilling operation.
• 【Versatile 6-Piece Set】This comprehensive set includes four essential sizes (2.8 3.2 3.5 4 mm) with a 1/4 inch hex shank compatible with most drill drivers and impact drivers It is ideal for furniture assembly cabinetry and general DIY projects.
• 【User Guide for Best Performance】For optimal results with clean edges use at a lower RPM around 200 Recommended for natural wood plywood MDF and fiberboard Not designed for use on metal or steel plates.

-The drill bit set comes in four different sizes: 2.8 x 8 mm, 3.2 x 8 mm, 3.5 x 10 mm, 4 x 10 mm (all with 3/8-inch drill bits and 1/4-inch hexagonal drill bits) and a hexagonal wrench -Color: Rose gold -Material: Metal -Size: Total length 80mm, collar width 30mm, collar length 15mm, handle diameter 6.35mm/1/4 inch -Adjustable depth: 5-35mm -Note: The center drill should not be adjusted too long as it is prone to breakage.