The Phottix Speed Ring for Balcar mounts Phottix softboxes with a studio light or accessories with a Balcar-compatible mount (found on Paul C. Buff products such Alien Bee and Einstein). The sturdy locking metal ring rotates to ensure that even when working in confined spaces, or at difficult angles, the speed ring can be easily mounted and rotated. Compatible with:Phottix Softboxes Photix 2-in-1 Softboxes Phottix Hexa-Para Softboxes Made from high-grade material it is durable and will withstand the demands of constant travel. Items Include: Speed Ring Carrying Bag