The file 'Soviet Gas Filter Cap (GOST) 3D Printer Model' is (stl) file type, size is 1.2MB.
This two gas filter caps are used to filter cigarettes (or anything else) smoke, that one exhale. It's designed for GP-5 and others GOST gas masks filters.
Filter_cap_1.stl | 1.3MB | |
Filter_cap_2.stl | 1.2MB |