Received spin shoes with delta clip option and there was an annoying rattling in each shoe. Upon research, I learned that I had to remove the attachment for SPD clips. Took out the insole and then had to pry out the small glued under-sole to remove the lose item. Because it is glued and although you can see the seam that needs to be opened, it made me wonder if I was damaging them. Hope not. Got them out, pushed flap back down and insole on top. Should work, but when a delta clip is ordered this piece should be shipped with the allen wrench not inside the shoe!