If you have used floor equipment, then you know not all wheels are created equal. Gofer assembles castor wheels using premium components and non marking materials. We seal the bearings to extend castor life for those heavy duty projects. We foam fill tires to help lessen maintenance and risk of flat tires. Our foam solution keeps tires rigid so as to grip the floor surface and prevent slippage. Call us today for a quote and ask about free ground shipping for most orders $600 or more.