If you get the large step bit, I would be curious to hear if you like it. I don't particularly like my larger bit, my Irwin, which goes up to 1/2" is nice, but my 1-1/8th jerks fairly strongly as it makes a step, which leaves me with a less clean hole than would be ideal. Also, the spindle on my (craftsman) drill press seemed like it should be loose when I first installed bit, but like Nate, the belt will slip before it does now.