This Photoflex Series 900 Speed Ring is an aluminum speed ring that allows mounting of a Photoflex (or other brand) Octagonal or rectangular softbox to a Novatron 2103C, 2103FC, 2150C, 2153C, 2150FC, 2030 Flash Head, or M300, and M500 Monolight.
OctoDome rotating connectors are made from heat resistant cast aluminum for durability, and they allow rotation while mounted to your fixture with your choice of any shaped softbox.
Note: A heavy duty swivel mount is suggested, to transfer the weight of the Octodome from the flash head to your light stand.