Question about Align 425mm carbon rotor blades

Unfortunately, I only find examples everywhere of what it fits, with the indication that others also fit - but it is not mentioned with which models exactly it is compatible.

Even after I finally found what I was looking for on the very confusing manufacturer's page, all that was written was "Use for T-REX 500 series". Perhaps someone who has bought the article and can provide more precise information will get in touch. I'm sorry that I can't help you directly.