3 Inch MRI Safe Caster with Brake – 12mm Threaded Stem – Service Caster

Wheel: 3" - Non-Marking Thermoplastic Rubber Tread - Gray Capacity: 66 lbs./caster Threaded Stem Size: 12mm diameter - 1.75 TPI x 22mm length Mounting Height: 3-5/16"You may also like 4 Inch SS Black Poly Wheel Swivel 3/4 Inch Expanding Stem Caster SCC.