N. C. Enterprises offers Bright Zinc Galvanized Wheel. N. C. Enterprises is an ISO 9001:2000 accredited company that manufactures standard and specialized light-duty castor, medium-duty castor, heavy-duty castor and extra heavy-duty castor and wheels. The Bright Zinc Galvanized Wheel is suitable for all kinds of trolleys and mobile equipment, these yellow lined solid cushion tyred wheels with roller bearing.