This model has an author's design for 3D printing , it is universal, but you can always change the size. There are no mounting holes in the mask, but you can always write to me and I will do it. It mostly serves as a decoration for the wall. , the mask can be put on your head and used for a photo shoot, there are holes for the nose in the mask, you can breathe without problems in it. You can also use the mask for commercial purposes, after the purchase, sell the printed parts ( but not sell the 3d model), just please indicate my authorship