Buttons are made of aluminium alloy tape (sheets) according to GOST 21631 with thickness of 2,5 mm of A5M, A6M (annealed) of normal precision GOST 13726. Buttons are made in one piece.
The front surface is clear and relief, without burrs, sharp edges, cracks, scratches, metal delamination, dents, sinks, corrosion centres. Gold-coloured anodic-oxide coating.
Fastening of the ear to the base of the buttons is made by mechanical means (pressing).
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