Maxshine6 inches/Dia:150mm,Thread: 5/8" Rotary Polisher Backing Pad-Yellow PU Hook & Loop Face

Will this work for the maxshine 15mm dual action polisher?

The thread diameter on my polisher is 5/8-11. This product indicates the diameter of the thread as 5/8 is it 11 threads per since?

I think i made a mistake buying this. I have a porter cable 7424xp that uses backer pads with screws. Is there a way to attach this to the porter bolt