New Four-flute Sawtooth Eccentric drill bit: With a unique cutting thread design, this four-edge serrated eccentric drill provides clean, smooth threading accuracy. Titanium Coated Design: Each drill bit is coated with a titanium film to enhance durability and heat resistance, ensuring that the drill bit remains after prolonged use. High Performance Bit and Tap Combination: Drill and tap in one quick motion with this high performance bit. Designed for maximum efficiency. Multiple Sizes Available: Multi-function drill sets are available in a variety of sizes, so you can use the right bit for any task, big or small. Wide Compatibility: This set of drill bits is suitable for a variety of materials, including metal, wood and plastic, giving you versatility across different applications. Colour:As Shown Material:alloy steel Package Contents: 10 * Multifunction Drill Bit(3+4+5+6+7+8+10+12+14+16) 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.