Usually if you Google the canu # the Singer system # will come up along with the Japanese system of # & letters
Like 88x1,88x9(Singer),DAx1 (Japanese) or 4:45EB1 Schmtez which is more confusing since only Schmetz uses it.You can also go to Schmetz's website & search,but as long as you have either a Singer system or Japanese system for the machine you'll get the correct needle for the machine.I never use the canu # since they just add to more confusion.