A screw pin is tightened or loosened to hold onto the leg for a slip on a leg and then you tighten the screw, one of the pins or screws is broken. As seen in photos thy are Large, made of cast iron by At Wood.
Antique Casters Payson Cast Iron Swivel Piano Industrial 1 3/4" Wheel Set
Set of 4 vintage Wooden Casters Wheels 4" Dia. Furniture Industrial Table Buggy
4 Antique Payson #66 Cast Iron Swivel Casters Industrial Wheels Fant Look Patina
c1900 Cast Iron Swivel Casters vintage Antique Industrial Furniture Wheel 1-3/8"
c1900 Cast Iron Swivel Casters vintage Antique Industrial Furniture Wheel 1-3/4"
