MetalTech 5 in. Caster Wheels with Locking Pins, Heavy Duty Dual Locking Casters, Scaffolding Tools for Baker Scaffold (Set of 4) I-C4CAS5 - The Home Depot
MCAMPAS 2 Pack Lock Swivel Caster Replacement Parts for Weber Gas Grill Stem Casters-2.5 inch Caster Wheel: Amazon.com: Industrial & Scientific
Cart Wheel W/Lock - C1C280014L - Coyote Outdoor Living