Montague: Yes, I was thinking about Gironda, with the ring fly's in mine. Thank you.
Can do floor fly's, or reverse face down fly's (so many different names for the same exercises/training systems in BB'ing or lifting..west coast, east coast and all points between) with a pair of DB's. Just loosen the outside collars so the plates can act as rollers and extend out to the sides. Keeps tension on the pecs throughout. Something like you can do with a Ab roller. As it becomes easier, place the feet on a bench, chair or whatever.
Not designed for really heavy weight, a DB fly can become more like a wide DB press with more of a arm bend. Which you will have do do with extreme weights, else the bicep become over strained/stretched, begging for a tear. Good Luck.