... . High quality and lowest price Description:residential door roller (2" White colour Nylon )2” 11 ball nylon tire ... We are member of International Door Association (IDA)Products are exported to U.S.A.,Korea,Canada,Italy ... Fenghua Xinsheng Machinery Factory. Index: garage door, sectional door, overhead door, industrial door, commercial door, section door, hardware, part/parts, components/component, ...