I bought the RH328 for general use 1/2 drill bit, I don't always need to drill cement or brick but would love to be able to if needed. That's why I bought this drill chuck, I can drill large wood drill bits with the drill bit. I broke a few bits while drilling 1 1/2 holes in 2" oak. This chuck allows me to use a big, heavy drill bit for this type of job. This chuck is well made and smooth as silk. It would be nice having instructions on one page, using the wrench handle to pry off the rubberβ¦