Different sizes and designs. The largest is right around 4" long. Although there may be a matching set I believe they are all singles. ANTIQUE cast iron and steel caster wheels.
FactorDuty 3.5 inch with Brake Locking Caster Vintage Swivel Caster Copper Antique Gold Cast Iron Wheel Industrial Heavy Duty Rustic Retro Antique Cart Style 900LB Overall Capacity Set of 4: : Industrial
Industrial Furniture Metal Castors Casters Caster Wheel Coffee Table Wheels Vintage 8,9 Cm Black Circle T3
Las mejores ofertas en Piezas de muebles antiguos de acero y piezas salvadas
Antique Solid Brass Caster & Ornate Toe Cap Conch & Pearl 3 1/2x 3 3/4x1 3/8
Las mejores ofertas en Muebles antiguos Marrón Acero partes y piezas salvadas
Aluminum rustic iron caster with single-wheel design. Add a vintage look to your furniture with modern function. For interior use. Recommended for hardwood, wood, planking, tile, ceramic, linoleum, hardwood and laminate floor.
Richelieu 8125020290290 Aluminum Single Wheel Design Caster - Rustic Iron
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Parts & Salvaged Pieces, Antique Furniture, Antiques - PicClick UK