Tiffen 32F5 Step up ring with Series 5 to 6 Step Up Retainer for Switar 10mm,16mm,25mm lenses (Copy)

Tiffen 32F5 Step up ring with Series 5 to 6 Step Up Ring Retainer for Switar 10mm,16mm,25mm lenses

Custom Machined by Tiffen Metal Filter Adapter Ring with Dual Threaded Retaining Ring for the Earlier 10mm Kern Switar or Schneider 10mm also fits many other Kern Lenses so you can use Series 5 or Series VI (6) Filters that will not Vignette the Image. 

Not for the Later 10mm Switar Preset Lens.

Black Anodized Finish.