1. Titanium Combination Drill Tap bits are made of HSS 4341, offering sharpness, fast cutting performance, and retained strength and efficiency. The surface is coated with a titanium alloy, which enhances cutting performance, improves wear resistance, and extends service life. 2. This Titanium Combination Drill Tap Bit Set allows for tapping, deburring, and countersinking, providing a quick and complete solution for use on copper, wood, brass, aluminum, sheet metal, and plastic. 3. It offers high versatility. Each tap drill is clearly marked with size labeling for easy identification and selection. The 1/4-inch quick-change hex shank features a tapered end to help prevent excessive impact. The back taper extends beyond the tap to help prevent over-drilling and thread damage. 4. The storage case is lightweight and durable, enabling easy storage and portability across various job environments. This convenient hex tap drill set enables simultaneous hole drilling, tapping, and deburring. It provides stable performance and accurate drilling. Shank: 1/4 inch Hex (compatible with cordless drills) Application: Suitable for drilling, tapping, and cutting on light metals, aluminum plates, iron, and similar materials. Color: Gold + Silver Material: High-speed steel Package Contents: 2 x M3 x 0.5mm x 64mm Drill Bit 1 x M4 x 0.7mm x 65mm Drill Bit 1 x M5 x 0.8mm x 67mm Drill Bit 1 x M6 x 1.0mm x 67mm Drill Bit 1 x M8 x 1.25mm x 70mm Drill Bit 1 x M10 x 1.5mm x 70mm Drill Bit Note: The package includes only the items listed above. Other products are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.