Znic coated Steel roller 1.Material:steel 2.Finish:Yellow zinc plated 3.Lead time:25-30days Znic coated Steel roller1.high quality Steel wheel roller2.delivery date: Normaly ready goods and stock within 30 days.3. high quality and durable.4.Application: Used in moving door and window 5. Our strict online inspection and good quality control ability is always depenable. Brief introduction of our ...