Features: Premium drill bits set with carbide tip and hardened steel body ensures splinter free, precise drilling in hardwoods, softwoods, and plastics for flawlessly woodworking results. Features center ground pilot points for accurate positioning, drilling depth control, and antirust coating, coupled with Hexagonal /round shank for versatilitys tool compatibility. Ideal for DIY enthusiasts and professional carpenters requiring clean edged hole for furniture hinges, desk installations, or intricate craft projects. Perfectly drills through boards, plywood, solid wood panels, and plastic sheets when creating concealed hinges, dowel joints, or decorative inlays in workshops. This 5piece wood boring kit (15-35mm) combines industrial grade sharpness with smooth rotation stability, eliminating wobble for frustration free precise in every drilling task. Specifications: Component:Steel Box Size:Approx.20x15x5.0cm/7.87x5.9x1.96inch 4Option Type; Package Includes: Package A 5pcs Drill Bit(Adjustable) Package B 5pcs Drill Bit(Hexagonal Handle Professional) Package C 5pcs Drill Bit(Round Handle) Package D 5pcs Drill Bit(Hexagonal Handle) note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.