After repeatedly experiencing the frustration and difficulty of drilling large holes with spade bits, these Lenox bits bite greedily into wood. They are perfectly centered and cut very quickly thanks to the three cutting edges. In fact, they work almost too well as my 19v cordless Craftsmen tools couldn't always provide enough torque to keep the drill bit spinning - it bites wood so aggressively. **Update: After trying the Milwaukee Heavy Duty 3/8 Impact Drill and having the same issues, I realized that a regular drill in a homeowner's kit probably wouldn't be powerful enough for these bits. I have found that even without pressure, the drill stops so often that it greatly interferes with my projects. I'm not sure what size drill bit you'll need to use for drilling hardwood. and then resize to the larger size I need. With light or even light negative pressure on the bit (the tip automatically presses the bit into the wood), the bit is clean and does not stick to the wood. These bits will help you drill fast, especially when you have a drill that's up to the task. Thanks to the hexagonal shank, it fits easily into any drill and does not slip. The case is also very durable.