1.Light Weight for Power Saving 2.Smooth, Noiseless operation 3.Anti-Static Formulation 4. ... ,114mm,127mm,133mm,140mm,152mm,159mm,165mm. (other sizes available on request)Shaft:(mild steel/stainless steel)Seal:Triple Labyrinth SealBearing ... Type: SKF,FAG,NTN.LYC (other brands available on request). Power Saving HDPE Roller