Hesselblad SWC ground glass adapter is used to focus on all Hesselblad V cameras. It is equipped with a Alvandi ground glass. You can mount all types of Hasselblad V viewfinders on it.
Alvandi - Hasselblad SWC ground glass adapter Technical Specification
Material: Aluminum Alloy 7075
Coating: Black Anodizing
External color: Semi–gloss black coating
External dimensions: W:91, H:89, D:10 mm