Worried about caster dirt Wiping caster dirt is stressful Worried about the sound of casters while moving Worried about casters and floors getting scratched If you remove the caster covers at the entrance, you won't have to wipe the casters. Since it's made of silicone, it can be washed whole. Also, caster covers can suppress noise. Size: Fits wheels with a diameter of approximately 5 to 6.5 cm. Weight: Caster cover 1 piece: approx. 4g Color: Black Quantity: 16 pieces (for 2 double-wheel cases) *Double wheel casters require 8 pieces per unit. Material: Silicone Search terms Dirt-resistant suitcase caster covers Tire covers Travel business travel goods rubber carry-on case tire covers wheel covers silicone Wheel covers carry bag wheel covers scratch prevention rolling prevention luggage protection luggage wheel covers travel use