Add to Cart Compare Quick view Casters For Nail Tech Stools (5 pack) MSRP: Now: $18.98 Was: Caster Wheel Replacement for Nail Tech Stool. Polyurethane rubber wheels (2” OD) are gentle on the floor surface, non-slippery, easy to replace. Come with the 7/8” mounting steam. Black/grey color. Each rated 50 lbs weight capacity.