4" X 2" inch Stainless Swivel Caster, Thermo Plastic Rubber Wheel, 300 lbs Capacity, 4 inch x 2 inch, Heavy Duty, Industrial/Commercial, Roller Bearing, 4" x 4-1/2" TOP Plate.
It is made from high grade alloy steel for high torque capabilities.These components are manufactured to tight tolerances using proprietary processes that ensure smooth operation and high misalignment accommodation up to 90°, which is a significant improvement over commodity style double universal joints.3mm outer diameter, and a 123.