This is a black mount adapter made by TTArtisan. - Brand: TTArtisan - Type: Mount Adapter - Color: Black - Compatibility: For lenses - Included: Box Model: M-X1D This mount adapter is for attaching Leica M-mount lenses to Hasselblad XCD mount camera bodies, such as the Hasselblad X1D-50c, X1D II 50C, and X2D 100C. The retail price on Amazon was ¥7890. I am selling it to someone who needs it because I have sold most of my Leica lenses. * Compatible lenses: M-mount lenses * Compatible camera mount: Hasselblad XCD mount * Size: Φ72mm x 16mm Weight: Approx. 54g Thank you for looking.