What you will need to do is tell them the brand names of your machines. They put the metal brackets on the hoops to fit your particular machine(s). You will have to ask them if it will fit both of your machine types, as I believe some do cover more than one brand. They cover quite a range of brands. Here is a current list: Allied, Tajima, Barudan, Brother, SWF, Happy, ZSK, Melco, Toyota, HoopTech, Durkee,
Meistergram, Feiya, Axiom, Aemco, Prodigy,, Inbro, Generations
Ricoma, Phoenix, Sheen, Consew, Vital Link
They also can provide fixtures that will use your tubular hoops. Be aware you will need to purchase each fixture size per hoop size. As I stated above, it can get quite pricey, but we started with 2 sizes only, then added a jacket back size, then extra hoops. That wasn't quite as "ouchy" on the pocket book so to speak.
One thing to note is they are rather bulky so may not always fit into an area your regular tubular hoops may have, such as a port pocket for embroidery. We picked up a few items off of e-bay after we purchased the initial package.