I don't write many reviews but felt I needed it for this bit. I've been using cheap carbide end mills to align panels for a while and finally decided to move on to something better and WOW what's the difference. This weekend I leveled both sides of a 9' x 36' Mesquite slab. (for those who don't know, mesquite is an extremely hard and dense wood). I can't believe it's still sharp and I haven't even rotated the blade yet, AMAZING! I'd ruin a cheap bat doing this job. I will never buy another cheap leveling drill again.