4" X 2" Stainless Steel Non-Marking Rubber Wheel Caster - Rigid (Flat)

-Diameter: 4 inch

-Thead Width: 2 inch

-Type: Non-Marking Rubber Tread on Plastic Core

-Bearing: Roller

-Axle Dia: 1/2 inch

-Overall Height:  4 X 2 inch

-Swivel Radius:  4 - 37/64 inch

-Load Capacity:  325 lbs