Hockey rarity.

Last week, these items were found in the grandfather's garage. After careful research with the involvement of veterans of the sport, it became clear. It turned out that these subjects from 1978 to 1999 hockey players sharpened their skates!)
Between the two iron dies, the blades were clamped and with their hands, with the help of circles, they tried to carve out even surfaces.

Thank you for your attention.