... door rollerSpecificationUse: As garage door , sectional door and industrial door hardware..Material: Steel and Nylon for the roller.Nylon,2" , shaft ... 118 mmSteel,3" , shaft 11 mm, L=193 mm.Package and delivery1.Standard package: Paper carton + wooden case2, 200pcs/ctn ... processing,machinery parts, hydraulic fittingPackingAccording to customer's requirementsCertificateISO 9001 white/black door roller