This is a telephoto mask to be attached to the front of a Hasselblad bellows hood. Hasselblad lenses are prone to flare, so I think this is a necessary item for telephoto photography. I found an unused one, so if anyone is looking for one, how about it? It fits from the first generation to the final generation because of the belly standard, so it can be attached if it's genuine. Instant purchase is OK. Price negotiations are not possible. Please make a smooth transaction. Shipping will be via Yu-Packet Mini. I am listing various Hasselblad items.