Iron plate roller bearingsQuick DetailsType:Door & Window Hinges, Other Door & Window roller ... The pullyName:Sliding window steel roller,flat roller bearingColor:CustomisedFinish:Plate , painting , costingMaterial:Iron, stainless steel,Gcr15Roller material:Nylon, Pvc, ... high purity Aluminium or Zinc alloy ,stainless steel.2.Axle:Iron Axle or steel axle are avaliable .3.Color:White ,black ,silver ...