Hxchen 4Pcs 2 Inch Swivel Caster... vs Norgail 4 Pack 1 Inch Small L-Sh...

These casters have ball bearings in the swivel area as well as the wheels. Im sure they will not last long being outdoors, but look they would last for a long time indoors.

Rubber protects vinyl or laminate flooring from scratches. The wheel tire is softer, non-marring silicone appropriate for rolling on a hardwood floor. Shelf top roller on track design maintains maximum vertical and horizontal shelf stability.