AXL 2.5 Inch Office Chair Caster Wheels Replacement, PU Style Caster, Desk Chair Floor Protector, No Noise, Heavy Duty Casters for Hardwood Floors (Set of 5) (Chrome Feet, Grey/Black)

They're great, got them for my elderly to move around in the kitchen easier, rolls smoother, but also faster, higher risk of chair rolling out from under you if you sit on the edge and loose your balance.