Fotodiox Pro 152mm (6in) Speedring Insert for Most Softboxes, Beauty Dishes and More - Comet, Dynalite, and Compatible Options:Speedring Insert Only Fotodiox step-up rings are made

Fotodiox step-up rings are made with precision out of premium grade aluminum

Mounts M39 (x1 Thread Pitch) Screw Mount Russian SLR Lenses to M42 Screw Mount System cameras

This is why any lens you attach to an E mount camera is prone to wiggling

Lens Mount: Bronica GS-1 (PG) Mount SLR Lens Body Mount: Fujifilm X-Series Mirrorless Camera Body Manufacturer: Fotodiox Inc

Lens Mount: Mamiya 35mm (ZE) SLR Lens Body Mount: Canon EOS (EF

Fotodiox Pro 152mm (6in) Speedring Insert for Most Softboxes, Beauty Dishes and More - Comet, Dynalite, and Compatible Options:Speedring Insert Only Fotodiox step-up rings are madeDescription Specs Compatibility Product Highlights: Standard speedring insert for many light modifiers All metal interchangeable speedring insert Insert has an outer diameter of 6 inches (15. 2cm) Limited 2 Year Manufacturer Warranty The speedring insert is a replacement part for Pro Studio Solution EZ Pro Softboxes, Deep EZ Pro Parabolic Softboxes, EZ Pro Beauty Dishes, Fotodiox Lantern Softboxes, Classic Softboxes (speedring plate required), Classic