Drill Bits

The Ultimate Drill Bits for Home DIY Projects. Drill bits come in all shapes and sizes, from twist drills to flat spade bits. Understanding which drill bit is best for your project can save you time and money, so it’s important to familiarize yourself with the different types of drill bits available. For woodworking projects, twist drills or spade bits will do most jobs. If cutting through metal or plastic, it is best to use specialized high-speed steel drill bits or carbide drill bits.