Multi Flash Bellows Adapters.
Can be made with any flash adapter ring. These two have rings for the Minolta/Sony Twin flash, the Sigma EM-140 DG/Metz MS-15 ring flashes and a removable mounting ring for the Minolta 2400 Macro flash at the front.
Shown for illustration with the Minolta 25mm and 100mm bellows Rokkor on a Vivitar T mount (front) and the Minolta Autobellows III.
These adapters are made to order to your specification.
Available for most any bellows such as the shown Vivitar T mount and the Minolta Autobellows III and Nikon, Pentax Canon, etc.
Basic unit with one ring is $60, add $10 for each additional ring.
25mm Bellows Rokkor is shown with a custom made RMS to M42 adapter,extension, $30.