great size bit while it lasted. I like that there are two set screws to securely hold the stop in place, drill bit is tapered towards the tip, and didn't seem to clog up...  Then snap! broke the bit above the stop while tighting the set screw. I'm not hurcles but now I need to make a trip to lowes. Recommend buying parts like this in the store so you can return them hassle free after you open the package. Amazon isn't so nice.