Whether you're a hobbyist, a mechanic or a machinist who constantly works with fasteners, you can create threaded holes with ease when you have this Thread Tap Drill Bits Set! This set is designed for the most demanding projects and the hardest materials. The bits can drill, tap, and countersink holes in just one step because they are able to quickly penetrate materials. They come in a wide range of sizes and have a self-centering point to help the user maintain accurate placement. These are extremely easy to use which makes them a must-have accessory for your daily purposes. Highlights: PRECISE POSITIONING: Features a self-centering point to eliminate the need for center drilling or center punching ENHANCES PRODUCTIVITY: Requires no tool changes, offering good alignment and fast cycle times make this a very productive tool GREAT FOR VARIOUS THREADS: The bits come in 6 different sizes from M3 to M10 so it could meet your diversified requirements SPIRAL FLUTE DESIGN: The wide spiral flute allows chips to easily get out of the hole to prevent chip crowding and breakage of tap drill bits CONVENIENT: Easy to use and install, allowing you to change bits fast with one-handed load and release operation WIDE COMPATIBILITY: The combination drill and tap bits are designed to tap up to 10-gauge wood, plastic copper, brass, Aluminum, sheet metal and other materials SAVES TIME & EFFORT: Drills and taps in a single pass to save your labor and precious time SUPERIOR QUALITY: Made from a premium material that is durable and resistant to deformation or breakage SOLID CONSTRUCTION: The Titanium covered surface helps prevent oxidation and makes it rust-resistant We truly believe we make some of the most innovative products in the world, and we want to make sure we back that up with a risk-free ironclad 45 day guarantee. If you don't have a positive experience for ANY reason, we will do WHATEVER it takes to make sure you are 100% satisfied with your purchase. Buying items online can be a daunting task, so we want you to realize that there is absolute ZERO risk in buying something and trying it out. If you don't like it, no hard feelings we'll make it right. We have 24/7/365 Ticket and Email Support. Please contact us if you need assistance. Remember: Shipping usually takes 2-3 weeks read our Shipping for more details!