Features 1、Incisive And Rugged Design: The hex shank countersink drill bits feature spiral flutes for efficient chip removal, ensuring fast and effective cutting. The incisive steel alloy cutting edges create slick countersink holes and flush finishes, making it ideal for accurate woodworking and other applications. 2、Adjustable Depth Settings: Both the guide drill and countersink depth can be easily adjusted using the depth stop and included wrench. This allows for accurate drilling depths, enabling you to achieve the exact hole depth you need, which is essential for projects requiring high accuracy and consistency. 3、Multiple Sizes: This counter sinker drill bit set includes five M2 HSS tapered drill bits in sizes 1/8in, 9/64in, and 5/32in, along with 3/8in and 11/64in countersinks designed at 82° angles. Additionally, it features a 1/4in hex shank for excellent grip and compatibility with most drills, ensuring versatility for a wide range of drilling tasks. 4、Wide Application: These countersink wood drill bit set is designed for use with a variety of materials, including nature wood, particleboard, engineered wood, plywood, MDF, decking, non ferrous metals, gypsum board, and various plastic sheets. This makes them highly versatile, suited for both professional and handcraft projects. 5、User Friendly And Safe: The hex shank design ensures a secure grip and better torsion transfer, reducing the risk of slippage while drilling. This safety feature, combined with the rugged construction of the bits, provides peace of mind, allowing users to work confidently on their projects without worrying about equipment failure. Specification Item Type: Countersink Drill Bit Set Material: Aluminum Alloy Body, 6542 Blades Shank Size: Approx. 6.25mm / 0.25in Drill Bit Size: Approx. 4.8 x 12.7mm (3/16 x 1/2in) Approx. 4.4 x 12.7mm (11/64 x 1/2in) Approx. 4.0 x 9.5mm (5/32 x 3/8in) Approx. 3.6 x 9.5mm (9/64 x 3/8in) Cutting Blade Diameter: Approx. 10mm / 0.39in, 8mm / 0.31in Countersink Angle: 90° Application: Hand Drill, Charger, Drill Press, etc. Suitable Materials: Suitable for deep holes in hardwood, used to drill screw holes in wood and sink screw heads. Package List 5 x Countersink Drill Bits 1 x Depth Stop Collar 1 x Wrench 1 x Storage Box