I contacted customer service to purchase the flag rings. Customer service was great and even offered to order them for me.
I purchased four 1" flag rings, hoping to better attach a flag from Am. Flags Express to another companies pole. I chose the wrong size for that pole, but was able to use three of the rings elsewhere. On the correct size pole, they slip over the rotating part of the pole. The flag is attached with a plastic screw, through a grommet in the flag. The top flag mount also is attached to a "clip" on the pole that keeps the flag in position, at the top of the pole. The plastic ring and screw are easy to mount without any tools other than your fingers. These are inexpensive and effective -- as compared with fishline that I had been using to secure a flag to another company's pole. Price is reasonable for what you get!