Hanging Door Roller made in China Theory Tianjin igreat international trade can supply hanging roller system range for wooden and metal doors is a wide range of top hung system for easy movement of anything from light commercial doors up to very heavy and large industrial application. To accommodate for different building designs, doors can slide to one or both slides and are also suitable to cover any width of opening. Specification itemHanging roller wheel MaterialQ45 Steel UsageSliding hanger door,sliding gate,hanger door SurfaceGalvanized or zinc plated FeatureLong lasting Typehanging door roller CertificateISO 9001 Main MarketGlobal SampleSupport Product Description Product name4 Rollers Hanging Sliding Door Roller Sliding Door Trolley MaterialSteel DiameterDia 40 PackingPlastic bag and Carton Packaging and Delivery Packaging : carton Lead Time: 1 weeks Shipping: 1.By Express: UPS DHL, FEDEX, TNT, SF EXPRESS and China Post, 2. By Air: We can ship them by air to your country鈥檚 airport 3. By Sea: it's cheap and save your freight cost 4. We also can send to your forwarder or agent in China, who can arrange shipment for youHanging Door Roller made in China website:http://www.tjigt.com/industrial-sliding-door-fitting/hanging-door-roller/