Herman Miller2.5-Inch Aeron Office Chair Replacement Caster Set for Standard Carpet (Set of 5)

Do these casters use ball bearings on the swivels and on the wheels?

Herman Milller sells two different 2.5 inch casters. Are these the "standard carpet caster" or the "standard hard floor or carpet caster"?

Do these fit the soft pad chair?

Would it be okay to use these on wood floors? If not, can I get the link for those? Thank you