Our Brass tipped set screws allow you to secure your work piece very rigidly without damaging the surface. We have additional screws available. We use all of our styles and sizes of the Rose-Index in our shop quite often. Even though we have not worn out a brass tip out yet we do recommend having another just in case.
We are currently exploring a Nylon Tip. Our thought is for plastic or wood parts and minimizing the potential of clamp marks. Please feel free to reach out to see if this type of screw is of interest.