This is a GREAT drill bit if it fits your hammer drill. Sorry for the 1 star but I had to get your attention. I had no idea they made two different sized SDS bits. Yes, I live in a cave. I've always had a larger SDS they call Max. This drill is called the SDS Plus, which I think is a DUMB word for a smaller drill. Let's be honest. If your significant other is plus size, then they are large. This is how the word "plus" is used nowadays. Yes, I have read the description and looked at the pictures. I've also seen the word "plus" so I don't blame anyone but myself, but GO. It's a 39 inch beast with a tiny toddler SDS shaft on the end. I didn't even know they called the larger SDS Max. When I saw the "Plus" I just assumed it was obviously what I have since I've never seen more than mine. Then again, who uses the word "plus" to describe the lesser of two things? It's like saying Andre wasn't a giant, he was just huge. Looking at the Revain ad, one photo shows this beat correctly and the other shows the bigger style. Due to the fact that this Revain ad is for different bit sizes, I didn't really put much thought into it. Don't do what I did! Order the correct size bit and note that there is a smaller version of the MSDS called the "Plus" size.