Vintage Double Swivel steel casters

Vintage Double Swivel steel casters

4 heavy duty cast iron industrial casters. Rare dual-wheel and swiveling design!
"Rol-Ezy Chief 300" by the Currie Caster Mfg of Chicago, 1924. Unused new old stock in pristine condition with light oxidation. Base is 2.5” x 4.5” or 500mm x 900mm, width x length respectively.