Dear Sir/Madam,This is Tiina Monsen from DE.I'm looking for products with the following specifications:Set of 4 pieces.Plastic with rubber under or eva foamTrial order with standard packing.shipping price to usa, by air dorr to door.it is plastic caster cup, with narrow stopper for for wheel, under rubber or eva foamor a wheel stopper that functions without lifting the wheel.please send a price with photos and specification how the sets are packed Show More