Since there were a number of enquiries on the conversion kit for the Dremel drill press for the RTX, I'll just post the details here for the benefit of those interested. Well, all you need are two items to retrofit the drill holder as shown below. The body diameter of the RTX is slightly larger and you'll need a longer screw to replace the upper holder screw. Use a 5-40 screw 1-1/8 inch in length (you can buy something longer and use your RTX cutting wheel to make it shorter) that fits the original nut. Then you'll need to fabricate an aluminum adapter to fit the front of the RTX to the bottom part of the holder. I got a machinist pal to make one for me. The outer dia. is 30.5 mm, thickness 10 mm, and just ask the machinist to cut an internal thread that matches the front part of the RTX. That's it ! Good luck............