I bought this particular drill a few years ago and was disappointed when I first used it with a home plumbing drill bit. I couldn't make a hole through the top plate without the clutch slipping. Using a brand new bit straight out of the box it should drill through with no problem. Makita has put an end to this problem! I have several other Makita tools and they are good tools but this one is not at all. Check out another model or brand.